and why its really not that close....
I'm going to provide a statistical case for why Brady is your MVP and here's the interesting thing, when you start adjusting for opponent, its not that close.
First, I would like to point out that when you are looking at QB statistics, numbers like passer rating, completion % etc. are rather irrelevant because the POINT of an offense is to score points. I think everyone would agree with that. Or at least I would hope they do. If you don't, then I would re-think the way you look at football. After all, the goal is to outscore the opposition. Scoring points will increase your chances of winning, just like allowing less points will also increase your chances of winning.
So with that said, the first point in Brady's favor is that he currently leads the #1 offense in the league, which happens to be averaging 37 points per game. That would translate to 592 points scored on the season, which would break the single season record for points scored, surpassing that 2007 team.
However, we need to examine this further. Another important aspect of the MVP award is how much you contribute to your teams chances of winning. Because of the Patriots less than stellar defense, the offense is always under pressure to score (I think we all know this...). One aspect that Peyton has going for him is Denver's defense, which has been very good this year. The Broncos offense is not under pressure to score on every drive because their defense isn't giving it up every drive. One way to measure this is by looking at Win Probability Added.
Here is a link to explaining the stat:
http://www.advancednflstats.com/2010...explained.html
Here is another important stat that is important to measuring QB play:
http://www.advancednflstats.com/2010...ed-points.html
In EPA, you aren't looking at the situation of the game, rather you're looking at how the offense does on each drive. How many points are they expected to score based on each play. A team that moves the ball up and down the field through the air and converts 3rd downs which lead to points, will rank among the leaders in EPA.
So how does Tom Brady rank in both?
http://wp.advancednflstats.com/playerstats.php?pos=QB
He ranks #1 in the league in EPA. He is also #1 in the league in EPA/P which is EPA per play. So he's got the cumulative value and the best rate value (EPA/P). He is also #1 in the league in Success Rate, which measures the % of plays where you add +ve EPA.
(For more on that, check out these 2 articles/glossary page:
http://www.advancednflstats.com/2010/08/glossary.html
http://www.advancednflstats.com/2010...cess-rate.html)
He's #2 in WPA, trailing Matt Ryan by just 0.06. Both Ryan and Brady are well ahead of the rest of the pack. So only the Falcons have had to rely on Ryan to win games more than Brady. However, here's an important aspect to consider: this is not opponent adjusted. Ryan has faced a fairly easy slate of pass defenses this year, with the exception of the Broncos (who Brady has also faced).
So how about looking at some opponent adjusted stats?
Well over at Football Outsiders, they calculate a stat similar to EPA called DVOA.
(For an explanation of how they calculate it: http://footballoutsiders.com/info/methods)
http://footballoutsiders.com/stats/qb
Brady ranks #1 in the league in both DYAR and DVOA, which are both opponent adjusted (and for what its worth, he also ranks #1 in YAR). And here's the interesting thing: he has a pretty decent sized lead on Peyton in both categories. He has accumulated about 250 more DYAR and has about an 8% point lead in DVOA over Peyton. If you look at the whole table, thats a pretty decent sized lead in comparison to how the rest of the QBs are tightly bunched with the exception of Peyton.
We can also look at Total QBR, which is also based on the Expected Points model and also combines Win Probability Added into it. While I know many don't like the stat, I think its a pretty decent stat if you really dig into it. Many don't like the clutch weighted aspect but that is capped so you are only adding at most 3x the EPA in the 4th quarter vs. any other regular play. Anyways, I'm providing it. If you don't buy into the stat, there's the 2 stats above that point to Brady's case for MVP.
http://espn.go.com/nfl/qbr
Again, Brady ranks #1 in the league. He is also #1 in QB PAR (Points Above Replacement) and QB PAA (Points Above Average). He is 2nd (slightly behind) Matt Ryan in Total EPA. But again, we need to consider the defenses each have faced.
I calculated an opponent adjusted QBR for each of the 4 MVP candidates. The results are below:
Tom Brady:
Peyton Manning:Code:date team opp score ActPl QBR def QBR diff weighted 2012 - W11 NE vs IND W 59-24 36 93.942 62.531 31.411 1130.779 2012 - W10 NE vs BUF W 37-31 44 87.542 69.115 18.427 810.783 2012 - W08 NE @ STL W 45-7 41 98.362 60.141 38.220 1567.038 2012 - W07 NE vs NYJ W 29-26 49 72.093 56.964 15.129 741.299 2012 - W06 NE @ SEA L 23-24 61 72.010 49.127 22.883 1395.892 2012 - W05 NE vs DEN W 31-21 44 82.133 28.840 53.294 2344.918 2012 - W04 NE @ BUF W 52-28 38 96.519 69.115 27.403 1041.322 2012 - W03 NE @ BAL L 30-31 52 86.212 44.796 41.416 2153.636 2012 - W02 NE vs ARI L 18-20 55 30.620 43.316 -12.696 -698.281 2012 - W01 NE @ TEN W 34-13 33 90.443 70.145 20.299 669.855 Totals 453 81.6 255.785 11157.241 25.579 24.630
Matt Ryan:Code:date team opp score ActPl QBR def QBR diff weighted 2012 - W11 DEN vs SD W 30-23 49 31.694 60.081 -28.388 -1390.993 2012 - W10 DEN @ CAR W 36-14 43 78.574 61.232 17.343 745.739 2012 - W09 DEN @ CIN W 31-23 38 94.709 58.309 36.400 1383.197 2012 - W08 DEN vs NO W 34-14 35 96.267 67.408 28.859 1010.071 2012 - W06 DEN @ SD W 35-24 37 73.392 60.081 13.311 492.508 2012 - W05 DEN @ NE L 21-31 48 90.987 67.730 23.258 1116.362 2012 - W04 DEN vs OAK W 37-6 42 91.974 70.217 21.756 913.764 2012 - W03 DEN vs HOU L 25-31 60 56.015 24.056 31.958 1917.496 2012 - W02 DEN @ ATL L 21-27 51 21.312 42.035 -20.724 -1056.909 2012 - W01 DEN vs PIT W 31-19 32 94.411 49.688 44.723 1431.141 Totals 435 80.6 168.497 6562.375 16.850 15.086
Aaron Rodgers:Code:date team opp score ActPl QBR def QBR diff weighted 2012 - W11 ATL vs ARI W 23-19 50 31.218 43.316 -12.098 -604.891 2012 - W10 ATL @ NO L 27-31 58 84.871 67.408 17.463 1012.837 2012 - W09 ATL vs DAL W 19-13 42 82.033 53.372 28.661 1203.760 2012 - W08 ATL @ PHI W 30-17 42 95.658 43.550 52.108 2188.524 2012 - W06 ATL vs OAK W 23-20 42 53.141 70.217 -17.076 -717.194 2012 - W05 ATL @ WSH W 24-17 60 74.018 66.090 7.928 475.677 2012 - W04 ATL vs CAR W 30-28 50 47.877 61.232 -13.355 -667.742 2012 - W03 ATL @ SD W 27-3 47 84.633 60.081 24.552 1153.924 2012 - W02 ATL vs DEN W 27-21 45 77.606 28.840 48.767 2194.500 2012 - W01 ATL @ KC W 40-24 36 97.525 71.688 25.837 930.134 Totals 472 74.5 162.786 7169.530 16.279 15.190
diff stands for differenceCode:date team opp score ActPl QBR def QBR diff weighted 2012 - W11 GB @ DET W 24-20 37 35.476 69.407 -33.930 -1255.421 2012 - W09 GB vs ARI W 31-17 39 81.671 43.316 38.355 1495.833 2012 - W08 GB vs JAC W 24-15 43 70.423 77.554 -7.131 -306.631 2012 - W07 GB @ STL W 30-20 44 95.472 60.141 35.331 1554.564 2012 - W06 GB @ HOU W 42-24 44 95.756 24.056 71.699 3154.771 2012 - W05 GB @ IND L 27-30 47 54.667 62.531 -7.864 -369.614 2012 - W04 GB vs NO W 28-27 48 86.764 67.408 19.356 929.086 2012 - W03 GB @ SEA L 12-14 57 54.309 49.127 5.182 295.371 2012 - W02 GB vs CHI W 23-10 40 29.304 24.157 5.147 205.891 2012 - W01 GB vs SF L 22-30 63 55.141 55.550 -0.409 -25.795 Totals 462 69.5 125.735 5678.055 12.574 12.290
The bolded blue stat is what you want to be looking at. It's basically the difference in Total QBR above what the average defense allows. As you can see, once the defenses are factored in, Brady is way way ahead of his MVP competition. In addition, he has only one game where his QBR was below what the defense usually allows.
Note:
The weighted method factors in the number of action plays for each game (similar to pass attempts but includes designed rushes, sacks, etc.). So if a QB has more action plays in one game, that game gets weighted more. Basically, its like any other rate stat. The difference column treats every game equal without factoring in the amount of action plays a QB had in the game.
Another aspect of why Brady is the MVP is his consistency, which can be measured by the standard deviation of the game logs of QBR. As seen below, with the lowest std deviation in QBR, it shows the type of consistency that Brady displays.
Finally, here's a look at how the defenses the 4 MVP candidates have faced rank in various categories:Code:Ryan 21.7764016 Rodgers 23.84493657 Peyton 27.59992754 Brady 19.91270114
Code:Matt OPP Rate DVOA QBR EPA/P Pass SR Ryan KC 32 25 31 31 20 DEN 12 5 3 8 5 SD 21 17 18 18 18 CAR 16 9 20 13 24 WSH 17 16 23 25 27 OAK 30 30 29 30 25 PHI 22 23 6 27 16 DAL 18 21 12 19 12 NO 31 31 24 32 30 ARI 2 3 5 3 6 average 20 18 17 21 18 median 20 19 19 22 19Code:Aaron OPP Rate DVOA QBR EPA/P Pass SR Rodgers SF 4 7 14 5 11 CHI 1 1 2 1 2 SEA 3 2 9 6 4 NO 31 31 24 32 30 IND 28 32 22 28 26 HOU 7 4 1 2 1 STL 19 12 19 16 23 JAC 23 27 32 29 31 ARI 2 3 5 3 6 DET 27 28 27 22 19 average 15 15 16 14 15 median 13 10 17 11 15Code:Peyton OPP Rate DVOA QBR EPA/P Pass SR Manning PIT 8 14 10 15 8 ATL 11 10 4 4 9 HOU 7 4 1 2 1 OAK 30 30 29 30 25 NE 25 20 25 20 17 SD 21 17 18 18 18 NO 31 31 24 32 30 CIN 20 19 17 9 14 CAR 16 9 20 13 24 SD 21 17 18 18 18 average 19 17 17 16 16 median 21 17 18 17 18EPA/P is actually Pass EPA/PlayCode:Tom OPP Rate DVOA QBR EPA/P Pass SR Brady TEN 29 29 28 26 32 ARI 2 3 5 3 6 BAL 5 13 7 12 15 BUF 24 26 26 21 13 DEN 12 5 3 8 5 SEA 3 2 9 6 4 NYJ 9 8 16 17 10 STL 19 12 19 16 23 BUF 24 26 26 21 13 IND 28 32 22 28 26 average 16 16 16 16 15 median 16 13 18 17 13
SR is Pass Success Rate
Rate is NFL QB rating
Finally, an unrelated but important stat that again shows Brady's superiority:
Also, for good measure, he's graded out as Pro Football Focus' best QB this year (for whatever that is worth, just another stat in his favor, even if you believe its flawed).Code:QB rating when blitzed Brady 128.7 Peyton 100.2 Rodgers 120.9 Ryan 92.1
As you can see, the stats are overwhelmingly in Brady's favor, especially once you account for the defenses he's faced. He's faced a tougher slate of pass defenses than Peyton, who at this point is his primary competition for the MVP.







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That sucks, a lot, but unless he falls apart, Peyton is gonna win it. 
