Pac 12 is horrible.
Much easier to win games.
You have a competitive game in the Big 12 against everyone in the Big 12 pretty much every year.
Jamie Dixon probably could get any program to the tournament in 3 years in the PAC 12
I'm talking about winning games in the NCAAT. Regardless of the comparative strength of the PAC 12, Altman has made deep runs in the NCAAT at Oregon. If his success was really due to the PAC 12 being horrible, you wouldn't see the same level of success in the NCAAT.
When Dixon did make the tournament at TCU, he showed how tough the Big 12 is by losing in the first round.