The score was 17-10 Wisconsin, with Indiana having missed a field goal on Chappell's last drive. The stats:
Indiana: 7 first downs, 95 yards rushing, 62 yards passing (8 of 14, one TD)
Wisconsin: 7 first downs, 93 yards rushing, 46 yards passing (4 of 7)
Even if you count the Wisconsin drive (2 plays, 66 yards) after Chappell got hurt, before his replacement fumbled the first snap, it's still not a total blowout, 24-10 with Indiana moving the ball effectively (that is, 24-17 at the half would have been possible).
In short, Wisconsin is good, but the fact they blew out Indiana and we did not (42-35) probably doesn't mean as much as might seem. If Chappell is in for the whole game, it's much closer, with Wisconsin winning by at most 20.