With the rankings constantly changing each week, it will just have to be wait and see. Alabama is going to struggle to get through the SEC undefeated, and Texas Tech looks good, but they have to get through the Big 12. So teams like Texas, Oklahoma, USC, Florida all are in the wings waiting for them to slip up. It looks again like the BCS should be replaced with a play-off of 8 teams, but even then there will be an argument of who should be the 8.
Oh well.