The Pac has struggled some years no doubt. But if you can’t agree that they a good conference this year, what criteria do you use to determine any conference is good. I don’t accept that a conference can’t change in a year. One BB year has nothing to do with any other BB year.
I think the national championship indicates the nation’s best team. The number of teams in the sweet sixteen indicates the strength of the conferences for the current year. Invites to the tournament can indicate conference biases. Personal biases can be difficult to change in a single year.