Ohio has wins against Wisc, Cincinatti, and Mich at 11-1. Add in Penn St if they lose in the B1G championship game.
That trumps the PAC champ (and probably Alabama).
12-1 Minnesota or Penn St get in over the PAC champ and so does 11-2 Wisc with wins over Mich, Minn, and (Penn St or Ohio).
LSU is in hands down with only one loss to Georgia.
Alabama with a win @Auburn is in over Oregon. If Utah destroys Oregon I think they can get in unless Alabama does the same to Auburn.
Georgia at 11-2 should be in over any PAC champ as well with wins over ND, FL, Auburn and TAMU. All of those wins are better than anything the PAC champ will have.