You can't really compare UKs lack of disciplinary issues with OAD with any other program. UK has their pick of the recruits more so than any program in the country. Obviously Cal doesn't get everyone he wants but statistically speaking they relatively have their pick of the litter...and in doing so Cal can scout, nitpick and hand select which kids he wants based on pure ability, future NBA ability, coach-ability, and personality. When you hand pick your recruits, you're more likely to have success. This is a big part of why UK kids have been pretty good in the NBA. UL doesn't have than luxury. Rick can still pull very talented kids as evident by his class rankings but he's not getting the pick of the litter...he's getting the best of what he can get.
Something else nobody ever really discusses is that UK is ran like a pro team with semi-pro players...its a different mentality down there. Most of UKs roster is filled with kids that will likely play in the NBA so that mentality limits the shenanigans. Most programs don't have a roster that at any given time is probably 75% filled with NBA draft picks...so doing something stupid for them could cost them millions of dollars. Most programs like UL might have 1 or 2 NBA kids on it but the rest of the roster are talented college kids who likely either wont play pro ball or will play overseas...that can lead more dumb choices.