Overall, the B10 has been a big disappointment this season. Outside of the top 4 teams, there has been a big drop off. Teams that are typically good (Mich, MSU, Wisc, Nebr, Iowa, USC and Wash) are all having a down year. Purdue, NW and UCLA are all atrocious.
IU has had a very fortunate season in playing many of these teams and playing the worse of them on the road. This saturday will be the first time they will play a ranked team and in a very hostile environment.
I think there are teams from other conferences that will have a stronger resume to get into the playoffs.