IMO you could have taken the red T-shirts off of the Nebraska fans and put Michigan's or OSU's colors on and you would have the same fans. You may think Nebraska fans are arrogant but they don't compare to OSU or Michigan. The only difference is that Iowa fans and Nebraska fans intermingle more than Iowa fans and Michigan/OSU fans.
In Albuquerque, at our watering hole we (and the MSU fans) ran the Michigan fans out of the bar. Iowa had many more fans watching than Michigan is this bar. Plus the MSU fans gave the Michigan fans hell at every opportunity. It was fun watching MSU fans get incredibly rude to the Michigan fans---and I mean rude. They would sit right next to them and say the rudest stuff. Michigan fans finally just left.
OSU fans will sit in the middle of other fan bases and say such things as "Of course we are a great team, we are Ohio State," or "What do you expect, Ohio State is a great team, of course we get the best talent." You just want to puke all over them.
Nebraska is the perfect fit for the Big 10, right down to their fans.