I found the original poll question confusing, because I first thought this was a question about Michigan's easy Big Ten schedule.
It is clear to me that Michigan benefited from not having to play Indiana, Oregon, Iowa, ILL. The 2 teams Michigan played in the BigTen's top 6, USC and OHio St. Mich lost to badly. The only decent win Mich has is over Wahington at home. Michigan's record is a product of its easy schedule.