You can't get smoked with the playoffs on the line against a mediocre OU team. It's just that simple. Bama had two losses and very little margin for error. They blew it up when they got embarrassed by that OU team that promptly lost to Navy in their bowl game.
Same with Ole Miss and their whining. Yes, they had a loss to a pretty decent LSU team on the road but they also lost to a bad UK team. So they too had little margin for error, even with the quality of wins they had, so you can't lose to a mediocre UF team at the end of the year.
People like to contrast those losses with ND having lost to NIU. ND had little margin for error after losing that game and they simply didn't trip up against mediocre teams the rest of the way unlike Ole Miss and Bama. Instead, ND basically throttled every team on the rest of their schedule before the playoffs. If they had lost to say, USC to go with that NIU loss, guess what? They'd have been sitting home too.