Go back to the tape, my friend.
Of all of the running play videos for OSU in the ESPN link, only one was option. The vast majority were either straight handoffs or the QB scrambling out of the pocket. If you want to say by zone-read that he was handing off from the shotgun position instead of under center, then that's fine. But there was so very little "option" going on as to not be the credible reason for their running success. It was all up the gut, between the tackles stuff. In fact, every time OSU tried to break something to the outside, they got stuck...
http://scores.espn.go.com/ncf/video?gameId=400610178
EDIT: In other words, the "look" might be there, but there was no "read" going on. It was a hand off without any intent or decision to do anything else with it.
Dude, as a guy who's watched Ohio State all year and am mutual friends with some coaching staff members, I promise you Ohio State runs a lot of zone read. They absolutely run a spread offense and ran several zone read plays.
Don't know if you realize this, but they had plays where they read the end (inside zone), some where they read the tackle (outside zone) and even have several run/pass options where the QB reads the linebackers.
A LOT of what Ohio State does has some sort of pre-snap or after-snap option built in. Are they exclusively an option team? Heck no. They do/did run a lot of handoffs and some power too, but I promise it's the spread and threat of option that allows their power running game to be so successful.