Their victories came against Florida International, Sam Houston State, Indiana State, Kansas, Nebraska and Kansas State, with their victories against Kansas and Nebraska coming by a combined margin of 16.
That's a pathetic schedule, not a product of great coaching. They beat two Division-IAA teams, for crying out loud.
EDIT: As for the Young/Bush for Heisman argument, one of them is going to be robbed. Living on the West Coast, I have no choice but to vote for Bush based on the sheer amount I've seen of him, but people in the South would probably say the same about Young.