2014 has been, by a substantial margin, Kershaw's best season.
This article does a better job discussing why, than I ever can.
In short, because he's added a completely devastating slider.
He's added 6 MPH of velocity to his slider since 2010
His slider is in the lower third of the zone 82% of the time now - compared to about 55%-60% in earlier seasons
How much better has Kershaw been in 2014 than in 2013 when he was the best pitcher in the National League?
Striking out more batters, walking less and getting more ground balls.
If this is Kershaw's new true talent level, then he is just entering his peak and he's like a closer pitching 7 innings a game
2014 Kershaw: 33% K, 4% BB, 1.75 FIP, 1.93 xFIP, 1.90 SIERA
2013 Kimbrel: 38% K, 8% BB, 1.93 FIP, 1.95 xFIP, 1.67 SIERA
Mariano Rivera Career: 23% K, 6% BB, 2.76 FIP, 3.00 xFIP, 2.60 SIERA
Donít argue with idiots because they will drag you down to their level and then beat you with experience. óGreg King