I really don't think LSU is on a par with SC. If I had to peg them to a comparison team, it would be Tennessee if Horston is playing. Lots of talent, not a lot of team play.
Neither team has a chance against SC. The only difference is Tennessee played a bunch of tough teams early on and got exposed even before conference play. By contrast, LSU skated through OOC, and is about to play a couple of more serious teams in conference. They will get a beatdown from SC worse than Sandy or Auburn and be exposed.
On the other hand, if LSU blows out Tennessee, I'll change my view about them.