Well, they faced Ohio State with Holmes and Ginn and held Ginn to seven receiving yards. But, don't forget that Southern Cal hasn't exactly been facing good degenses all year.
Ohio State is not the offensive force the Fiesta Bowl implied. And Ohio State hadn't really found itself as a team at the point in the season when they faced Texas. Troy Smith is a good QB but he turned in the game of his life in the Fiesta Bowl. Not that I'm complaining.