Your post gave me an idea/thought. I would put the teams in tiers. Each team is capable of beating any team in their own tier and 1 tier higher and should always beat the teams 1 tier lower So purdue could beat a team in tier 2, all of the teams in tier 3, and should always beat the teams in tier 4. and yes, according to my rankings, I believe IU got very lucky this year and do not expect their continued success against teams like UW, Mich and penn state, but hey, it was a nice season.
I'll repeat, a team could beat a team 1 tier higher. should be able to beat any team in its own tier, and should always be able to beat teams a tier lower. I don't expect purdue to be able to beat UW, Mich, OSU or penn state. i believe they could beat iowa, NW and MSU. they should be able to beat Neb, IU, Minn and they should always beat Rutgers, maryland and Illinois.
tier 1 :
UW
Tier 2; in no specific order
Iowa
Northwestern
Tier 3: in no specific order
Purdue
Minn
Nebraska
tier 4
Illinois
other side
tier 1
OSU
Michigan
penn st
Tier 2:
MSU
Tier 3
IU
Tier 4
Maryland
Rutgers