duck league.
No NC's in 20 years, and the last Final 4 for a PAC-12 team was in 2008. Your league has one National Championship by a school not named UCLA in more than a half century (Arizona-1997).
Pac-12 gyms are too small for BYU (the Cougars would have the largest arena if they were in the Pac-12).
Your point about Bill Russell is ill-informed. The best Pac-12 PG of all time would be 3rd string on the WCC list (John Stockton-Gonzaga, Steve Nash-Santa Clara). Furthermore, the best program in either conference over the last 5 years is from the WCC.
Clearly, the Pac-12 is the better conference. But it's not like you're the ACC. You're the bottom rung in the Big 6, so much so that in some years, the A-10 is the better league.