Because we've seen how impressive the Big East is.
If the BE is not good how come they went 11-3 against the Big 10 and Big 12 during the regular season? Or how come they had a winning record against every other major conference?
Did the other teams just decide not to play in those games.
Anyone who judges a conference in a single elimination tournament is not very smart.
This game has nothing to do with the BE versus the Mountain West, this is a game between UConn and SDST.