re: Alabama by far the best defense, right? Well maybe not.

Alabama's defense has a weakness - giving up big plays in the secondary. But to exploit it, you have to have a QB who can get it to them, either by great blocking against a sick defensive line (good luck with that), or with a quick release and great reads and check downs - essentially Peyton Manning. Alabama's pass rush - possibly the best we've ever seen - masks the fact that the secondary is good but not great.

And all of that is before we talk about the other side of the ball, where you need an LSU style defense - great speed on the edges and enough people in the middle to keep from getting pounded. There aren't many defenses out there like that, and while auburn has a very good defense, it's a different style from LSU's.