At the beginning of the year their schedule looked tough. But as the games began to play out, not so much. Michigan and MSU have been utter disappointments this season. Miami is a .500 football same as BYU.
But the fact of the matter is the Irish still beat four ranked teams. Judging by the "eye test", I believe that, as of right now, Alabama is the top team right now, but not head-and-shoulders above everyone else at all.
That stated, the Tide's signature wins were against that same Michigan team on a neutral field and against Mississippi State at home. Other than SEC honks, who believes that Miss. State is all that?