I've said it before and I will say it again - I think there's a misunderstanding about the NCAA: NONE of its tournaments are designed to be best "x" number of teams in that sport. They are national tournaments designed to have as many teams as possible have a chance to win the title. Why? Because the schools want it that way.
Let's take the NCAA D1 basketball tournament. No one would argue, I think I can safely say, that anyone would include Wright State (21-13 overall, 15-7 in the Horizon League) as one of the best 68 teams in the country this year. But in order to hold a national tournament, the schools have decided that every (eligible) conference has an automatic bid to the tournament. And, it's up to that league to decide how to dole that out. The Horizon could have given the bid to Cleveland State (the regular season winner), or not even hold a conference tournament (how the Ivy League was until a few years ago). But it offers the spot to the tournament winner - and so Raiders go dancing.
And, isn't that part of what makes the 'madness' of March Madness. No one puts UMBC in the field, but then it goes and beats #1 seed Virginia, and we have March Madness. Florida Gulf Coast makes noise. Loyola Marymount in 1990. UW-Milwaukee to Sweet 16 in 2005. And so on.
We have conference winners, and then 'best of the rest' teams to fill out the field, making a national tournament.
Which brings us to NCAA D3 hockey. St. Olaf doesn't get labelled as one of the 12 top teams in the country - not with a losing record. But every team entering an eligible conference tourney - uh, sorry WIAC - knows it can win the national title. So, St. Olaf goes ahead and wins its conference tourney - something all of the MIAC schools knew was a possibility - and they get in. And then - trust me, I was there - almost beats a perennial powerhouse on its home rink. Welcome to the madness of March.