OSU attempts 46 rushes per game, which is exactly double the amount of passes it attempts.
In fact, its passing attack ranks as one of the worst in the country, throwing for only 180 yards per game. Combine that with the fact that Michigan's pass defense is statistically the best in the country, and it doesn't bode well for OSU.
That's probably fine with them, though. Their game plan is to pound the ball anyway, and that's just what they'll do. OSU rushes for 245 yards a game, which is ninth nationally.
If Michigan can take that away, though, it would likely win. It won't be easy, but it's certainly doable. From late September up until the last two games, Michigan's rush defense was lights out. Nobody was able to run on them until Northwestern's option attack tore them up.
If Michigan reverts back to the rush defense we saw most of the season, it will likely win.