Oklahoma is the worst ranked Big 12 team on Kenpom at 37. We are second worst at 34. This is crazy.
All 10 teams are in NCAA tournament range.
Over half the Big Ten is rankings lower than Oklahoma (9) teams)
6 ACC teams are ranked lower that OU
6 SEC teams are ranked lower than OU
8 Pac 12 teams are ranked lower than OU
6 Big East teams are ranked lower than OU
I don't know if a conference has ever had this high of a floor. The worst Big 12 team would be near the middle or in the top half of all other P6 conferences.
What is it that's made the Big 12 so dominate the past 6-8 years? Outside of Texas, the states aren't exactly recruiting hotbeds.
The impressive thing is those numbers aren't going to change much.
Roughly 90% of the Big 12's resume relative to other conferences (not relative to other teams within the conference) is already set in stone from the 2022 out-of-conference schedule. Big 12 teams can steal "goodness" from each other on KenPom and Torvik during the conference season, but conferences can no longer steal from each other. It is a zero-sum game where a team like Iowa State winning takes from a team like Oklahoma losing, but that outcome is a net zero for the Big 12 versus other conferences in the rankings.
There might be a slight shift depending on how the Big 12/SEC challenge goes and then of course with the NCAA tournament, but I imagine the Big 12 being miles ahead is not going to change.
As to your last question, I think it is a combination of factors --
(1.) shrewd hiring and retention of some quality coaches
(2.) having some high-quality coaches who would never look to leave their current school, like Huggins
(3.) ADs that, while smaller in budget compared to Big Ten and SEC schools, have made a commitment to winning in football and men's basketball over everything else
(4.) lots of programs with hoary traditions and intimidating home courts
(5.) Kansas -- much as we hate them -- being the conference's lodestar and champion... Kansas has had a strong decade... if Kansas were down, the whole conference would be
(6.) Scott Drew taking a sleepy Baylor program and making them the power in Texas
(7.) something of a feedback loop, too, I think... conference is good, good players want to play in it, makes the conference even better, TJ and the like can sell "come play in the best conference in the country," and then the feedback loop continues this virtuous reinforcement