Wisconsin didn't stack the box as much as they should have.
McNamarra is still likely the better QB in terms of reading coverages and throwing the ball accurately. I think that is why he had the edge early this season, and Kirk wasn't necessarily wrong. Clearly Sullivan has done well with his feet but he literally hasn't been FORCED to throw the ball much yet. That day is coming. His ability to run does help the run game for certain.
Remember all those years where Wisky had the better OL and RB room? Our OL played great tonight and the roster of RB's is fantastic. All 3 of them are reading the holes extremely well, something other RB's have struggled with.