I've seen some people mention that none of our "top 25 wins" last year were against teams that finished ranked.
It's worth noting that after starting off 1-6, Kansas clearly got it together and won 3 of 4 games, including wins vs. #17 Iowa State, at #6 BYU and vs. #16 Colorado. Also, they had FIVE one-score losses, including a 2-point loss at #16 Kansas State that prevented a 5-game winning streak.
Michigan also looks SO much better in hindsight, and I think people put way too much stock in their home beatdown at the hands of Texas, a team that obviously proved to be a very, very good team. After losing to us, they finished the season 4-2, with the only losses being to #1 Oregon (we can't really judge that!!) and a 5-point loss at #8 Indiana, IU's closest game up to that point. Their wins obviously also included a stunner at #2 Ohio State and vs. #11 Alabama in the ReliaQuest Bowl.
Point is that we clearly beat some genuinely good football teams last year, and I didn't even mention the "crown jewel" of humbling South Carolina in the Citrus Bowl!