I think Miami is a much tougher matchup for the Gophers than BC. Not that BC will be easy, but they like to skate and take their chances and give you your chances. The Gophers should have a shot in that type of game primarily due to Kangas. If Miami gets ahead they will use their size and goaltending to shut the Gophers down. Very similar to Denver who gave up a lot of shots in the 3rd, but only a couple of really good chances.
The Sioux have a tough regional, but overall a very good draw. Wisconsin has been up and down obviously all season. I think they have a great shot at knocking out DU, but will come up flat vs. UND/Princeon if they get there.
The Sioux (and the Gophers) will only have to go through one of Michigan/CC/UNH who I thought were the best three teams in the country for most of the season.