First of all, those numbers are incorrect. The MWC has five teams that won seven or more games. Here are their standings:
TCU 8-0 13-0
Utah 7-1 10-3
San Diego State 5-3 9-4
Air Force 5-3 9-4
Brigham Young 5-3 7-6
Colorado State 2-6 3-9
UNLV 2-6 2-11
New Mexico 1-7 1-11
Wyoming 1-7 3-9
You leave San Diego State off your list of legitimate teams, which I don't get at all. They played at Missouri in September and lost 27-24 on a 60+ yard touchdown pass with 51 seconds to go. They didn't lose a game by more than 4 points all season.
Yes, the MWC has four bad teams, including New Mexico, which might have been the worst team in division I. But the Big Ten had three teams that were as bad as any they've ever had. Here are the nonconference wins for Minnesota, Indiana, and Purdue: Western Illinois (FCS), Ball State, Middle Tennessee State, Towson (FCS), Western Kentucky, Akron, Arkansas State. That's it. Minnesota lost to South Dakota (FCS) and Northern Illinois; Purdue lost to Toledo.
Indiana gave up 83 points to Wisconsin. Even Austin Peay held the Badgers to 70.
You're telling me that Indiana, Minnesota, and Purdue constituted part of a weekly grind? Give me a break. Those should have been guaranteed Ws for any team with a pulse, and the fact that they weren't only demonstrates the mediocrity of the Big Ten this year (yes, including Iowa).