There's been a lot written about the Herman-Meyer connection and the insights that might be gained. Oklahoma had a week to prepare for Houston's system and a live game against a team that plays a lot like Ohio State. Now they've had another week to prep for the same/similar system.
Oklahoma knows where they were beat and can make adjustments. Ohio State can bring another level of talent, potentially exploiting things that "almost" worked for Houston. Oklahoma hasn't seen how Ohio State will go after an Oklahoma type team.
Does anybody get an edge?