Ohio St -13.5, and they'd cover.
Boise St -10 vs Ball State, and they'd cover.
Huge difference between all those teams. Ohio St is much better than Boise, it's not close. Boise is much better than Ball St, it's not close.
Like HW said, no non-BCS team could hang with the top BCS squads this year. Florida, USC, Oklahoma, Texas, Penn St, Ohio St, and even Alabama would all destroy Boise St, Utah and Ball State. TCU is the best non-BCS team and they'd get destroyed by most of them too. They might keep it semi-close against teams like Penn St, Alabama and Ohio St. Maybe Texas too, but their offense would probably be too much.