I disagree that he should have knocked him out. I don't think Guerrero has ever been knocked out.
I'm pretty sure that was sarcasm about Berto. That was a good win by Guerrero but nothing special. Berto is nothing special.
But the way I see it is that they are hyping Danny Garcia a ton. Talking about him fighting Keith Thurman and Timothy Bradley etc.
So he fights Robert Guerrero.
Who got KILLED by Keith Thurman he lost 120-107 on one of the cards.
Who lost handily to Floyd Mayweather.
Who won a split decision over Aaron Martinez that could have gone either way.
Long story short Robert Guerrero has not been fighting at a high level his last 4-5 fights.
If Danny Garcia is as good as some of those guys mentioned above (like Thurman or Mayweather) then this fight should have been nowhere near as close as it was in my opinion.