Top 3 are very good, the next 2-3 are pretty good. The problem is the other 8 are bad or very bad. The B1G is very top heavy this year (like the SEC usually is).
Nebraska's biggest problem is that the only "good" win they have is Michigan. They lost every other game they played against good teams (KU, MSU, Creighton, Purdue, OSU). They don't have any "bad" losses, but one good win and no bad losses is not a great resume. They have played better lately and hopefully the committee takes that into account, but there is no guarantee. There is a chance that 22 wins gets them in, but I'd feel more comfortable if they won out (23 wins) and be mad if they won out plus 1 in the conference tournament (24 wins) and still didn't get in.