Ohio State
I would argue LSU by far. LSU has played Auburn and Florida and to a lesser extent Texas. Two games where they possibly could have lost. OSU really hasn't played any teams of that caliber yet.
That is the flaw with SOS rankings in my mind. You gain a bunch of rankings by beating teams ranked 60-80 as opposed to 80-120 when in reality none of those teams have a chance to beat a team like LSU and OSU this year.