hard to say whats better, they are both very good, but different
Bama is bigger and a better run defense, really good front 7, they'd match up great against Wisconsin or other power teams
LSU is faster and more explosive, more turnover capability, math cup great against Oklahoma
I think the Nov. 5th showdown is going to be the de facto national championships as either LSU or BAMA would DESTROY OU, Wisconsin, Stanford, or Boise IMO. I'll be picking Bama in the head-to-head. I think they have the more favorable matchups.
LSU's QB(s) cant spread the field enough to to put the pressure on Bama's DBs instead fo their front 7, meanwhile Bama's offensive strengths (the power running game) play off of LSU's weakness and eliminates a lot of their big play abilities (sacks / interceptions) through a conservative passing game. Should be a GREAT game though!