Re: Bracketology
Because bracket integrity is more important than seats sold (well, it's supposed to be, anyways).
The #4 seed band is 13 - Union, 14 - Maine, 15 - BC / UNH, 16 - AHA Champ (RIT).
The #1 seed band is 1 - Denver, 2 - Miami, 3 - Ferris, 4 - Wisconsin.
The 1 seeds are placed closest to their home, in order (Denver gets St. Paul because they choose first and it's their closest home site). Towards the end of the process, the 4 seeds are placed such that the (1-seed rank) + the (4-seed rank) = 17, as long as none of these match-ups are intra-conference. So, Union gets stuck with Wisconsin, who was stuck with Worcester after the other three #1 seeds had chosen their closest home for the regionals.
It will all make much more sense once we get closer to Selection Sunday, and when the Bracketology blog goes up on USCHO. You can read some of last year's blog if you're really curious.