In pure truth and honesty, I hope you and he are right. IMHO, KC is limited by talent. I think UT's ceiling is 7 wins with him... not what I think they will win but the max I think they can win behind him even with a really strong run game. I've watched enough to believe he has enough head but not the arm. Those supporting him have to do so on his "game management". But that only works vs what JG showed us last year. He had some fairly ugly decision making at times with Stanford too.
IF.... Guarantano has truly overcome his decision making, playbook knowledge, and understanding of concepts issues... then he is a guy who can give UT plays. Enough plays IMO to win 8 or 9 games with maybe a significant upset along the way. I'll say it again. I LOVE the way he throws the ball. His throws on the first two drives vs Vandy last year were not much short of perfect. But I did not leave last year with confidence in his decisions or his ability to make reads or master a college level offensive system. The rest of the Vandy game IMO contained signs to validate those doubts.