From my perspective, whitmer is the best qb by far. If you go by the spring game, he identifies the open target, gets the ball out of his hands quickly and he puts the ball in a position where receivers can make something happen. Fundamentally, he has better footwork, pocket presence, anticipation, and accuracy, than any of the qb's at this point. He's a guy that gonna thrive in the short to medium range passing game and the defense is not gonna be able to overplay the run with 8 or 9 guys in the box without getting burned for big plays.
It just makes sense to make sure that he gets the most reps with the first team. The best players have to play its simple. And considering the fact that Whitmer was behind J-mac and nebrich, and also was learning the playbook on the fly, he still proved himself to be the best qb by the end of the spring. This guys hungry for playing time, and don't think that coach p didn't know that he was gonna be the starting qb the minute he convinced him to transfer here.
The only issue with Whitmer, is that he will take alot of chances and he may throw alot of picks. He has that gunner mentality, and he isn't afraid to try to squeeze the ball into tight places. Last year he threw 14 picks in JC, how many ints does he throw in the be?