Another thing that isn't mentioned, and I think it applies a lot to TNs struggles at QB this year as well, is OLine play. When the QB KNOWS that he will be pressured, he becomes gun shy. Then when they don't get pressured, it's like they can't go through the progressions quickly enough.
At least TN did have Sampson and was able to run the ball to a degree. I may be mistaken, but Bama hasn't had much of a run game (not counting QB) in a few years it seems. With the recruiting that Bama has consistently had, how is that possible?