-The 400+ passing yards can be attributed to play calling
-the high percentage of passing plays can be attributed to RB depth
-the high percentage of passing plays can be attributed to the defensive scheme
-the big run averages can be attributed to the high number of passing plays and defensive scheme trying to stop the pass

I could go on but I'm sure you get the point. If we run two times, one for no gain, the other for 99 yds doesn't mean we'll avg 49.5 yds a carry. If the play calling was reversed and we lose, then people would complain about taking the foot off the pedal or we didn't throw much. The game is situational dependent. Play calling is an art and you take what the defense gives you and hope your team can execute. We aren't Utah where we can run down opposing teams throats... without TH at least.