it's really hard to judge across all teams. I watched Wisconsin several times in the regular season, and they did have matches where they were not impressive, but still won. I was hoping they would have one of those matches vs BYU, but instead BYU had that kind of unimpressive match.
So, for me, I don't count it as an upset, since we had little comparative knowledge to start with.
Just my .02, which sometimes is worth only .01.