I think Michigan's head coach put it perfectly:
"... One of the uncontrollables for us is the Big Ten’s decision to play conference only, which nobody wanted of the coaching group or the players. Nobody wanted a 44-game conference-only schedule. We all knew that could negatively affect our opportunities to play in the postseason because you couldn’t evaluate our teams against outside competition... "
Source
So now that the weekend is over can it be said with certainty Nebraska was underseeded? Arkansas is the No. 1 seed overall for the tournament so therefore the committee must have felt the Huskers were at the bottom of the pack of all No. 2 seeds. Of the sixteen No. 2 seeds NC State is the only one that won their region so far. I think my stats are correct. Nebraska is only one of four No. 2 seeds still alive this morning. Therefore ELEVEN No 2 seeds that were seeded better than the Huskers have already been eliminated from the tournament.