ND is playing inspired football and they're well coached but OSU is on a different level right now. Not sure what the score is but OSU by 10 seems low to me. I'd probably go OSU by 17-20 at least.
ND is a solid, talented football team and the coach is getting the job done. Despite their somewhat mid strength of schedule, they've been very good since their one loss early in the season. They're no fluke.
That said, I agree tOSU is on another level right now. I think ND will give them a good showing.