I'm leaning toward LSU, because its better for the conference.
The SEC needs as many contenders for the BCS bowls as possible. Lets say Tebow is lost for the season and UF falls apart. Bama will still control its destiny WRT the BCS Championship Game. LSU will have two losses at that point. Two losses that every other team in the nation would be expected to have as well, if they had the same schedule. But for these blameless losses, LSU is undefeated. LSU would be in the running for the SEC's second BCS bowl.