In addition perhaps, there is a possibility, albeit a REMOTE possibility, that opposing defenses respect the run more with Kraft, which forces another man in the box. Maybe they don't look at the PFF rankings. If so, that in an of itself would open up the passing game.
Update: I just got the opportunity to listen to McGinn and Dunn talk about Kraft's blocking in glowing terms at about the 9:00 minute mark of their podcast.
Originally Posted by: Martha Careful