No way he leaves Bama for Texas. All he has to do is go 1-1 against A&M and LSU to get to the SEC title game. Of course they'll be ranked in the top 5 as they win four weak non-con home games and the the other powers of the mighty SEC West like Kentucky, Vandy, Tenn., and the two Miss. schools. This is the beauty of their schedule. No Florida, Georgia or USC in the regular season.
Whereas, in the Big XII, he'd have to play all the teams in the conference. The top tier teams, the good teams, and even the bottom teams. He may make more money at Texas, however, because of the ease of their path to the SEC title game, he'll have a much easier route to the National Title game. Plus they pay their players better in the SEC.