From what I've seen OSU and Clemson are the best 2 teams, and we owe Clemson big time. IMO the semis are the actual final: The winner of OSU/Clemson will trounce the winner of LSU/Oklahoma because the latter two teams are suspect on defense.
So if we're worthy, prove it in the first game, then the second game is easier. I'd rather do that than beat up on Oklahoma first, get a fat head, then run into the reality machine with Clemson in the second game. I think there's a psychological reason why the #1 team has never won the NC yet.