Don't complain too much about LSU "giving away" this game. And that Mett just outplayed AJ in all aspects of the game.
In that final 1:34, AJ led the drive and scored with 0:51 left. It took him 43 seconds. If Mett was playing better than AJ, then 51 seconds was more than enough time.
Mett's final drive?
2-2, 5 yards, and sacked. Total drive - negative 1 yards.
When it mattered most, AJ was the better QB.