Home field advantage has never been karger in college football. The seems to be only one team in the country this year, good enough to consistently make it not matter.
That's what great defense does for you. It's one reason that Michigan has a chance today. They've played very solid D all season, except for one half at MSU.
Ohio St is probably10 points better or more on a neutral field. But at Michigan, the Wolverines might pull it off. It will largely depend on whether the officials let their secondary mug the receivers the way they have most of the season, if they can run with them.
tOSU's receiving room is really good.