The lack of great play calling is I would assume a function of not having adequate practice time. Its really more about execution. But you would also think that if they pared down the playbook and simplified it, then execution should be better if they focused what practice time was available.
To the folks defending Tommy and saying Rex isn't the answer because he misfired on a couple of passes.
Did you look at the stat lines for both guys and tell me who got 95% of the reps with the ones in Practice? Who had the higher completion percentage? Which QB moves better in the pocket? Which QB seems to be able to get away from pressure and who seems to run into it? Which one makes the better decisions? Really, the only difference I see is that one got more game reps.
I dont think either one of them is the answer. I have very little confidence in either of them until I see someone actually give the team a legitimate chance to win, until then this is all a waste of words IMO.