As noted, it's questionable whether this means anything. Experience notwithstanding, we have no proven impact players, just a lot of juniors and seniors who have never done much.
I think in this case experience is over rated.
Of course, Alabama and OSU were doing just fine with a young roster, but an older roster can only help in a case like Michigan's. Also note that we were also very junior and senior heavy in 2011, which allowed us to get 11-2 record. I feel like Michigan will be a very good team this year with Harbaugh's coaching, 5th year guy at QB, and juniors and seniors all over the depth chart. I really think we'll only lose to MSU and OSU.