That Alabama team was not that good. The SEC west was down that year big time. This Alabama team is much, much better. I think Utah that year was much better than Houston is this year also.
I think an Alabama-Houston game this year would be like that Alabama-Michigan State game last year...
I still say that Alabama is the best team in the country this year, and Vegas agrees with me. In the hypothetical rematch between LSU and Bama, Bama would still be a 2 point favorite as of right now, while LSU would be more than a touchdown favorite against any other team:
http://espn.go.com/espn/page2/story/_/id/7216359/lsu-alabama-rematch-bcs-national-championship-realistic-scenario