11-2 is not an unrealistic expectation. Many of the teams that Tennessee will be facing this year will have major growing pains. Sure, Tennessee lost some key players, but Florida lost nearly its ENTIRE defense, plus a senior QB. Who knows about Georgia this year, they may be solid but beatable. Bama may get shoved around on defense a little this year. SC will have a good defense, but a poor offense. Cal is just not as talented of a team as Tennessee is, they lost their best players on defense and they were not even very good with them.
I think it is quite probable that behind the leadership of a senior QB like Ainge that Tennessee can win at least 10 games. Ainge has the ability to win many games by himself with only mediocre play from the rest of the Offense.