I'd say the Trojans mop up the talent from west of the Mississippi given that their QB (Booty) is from east Texas. If I'm not mistaken, he committed to LSU before going to USC.
Also, not to split hairs, but LSU is technically EAST of the Mississippi by about 500 yards.
My favorite losers for SEC intra conference play are UF and Auburn. Love to see Urban Crier have a meltdown. For non-SEC play I'd just as soon see the SEC beat up on everybody else. We'll take care of shaking the cream to the top within our own conference.