Kansas football is legitimately and perennially terrible beyond belief. I started doing a 10 year accounting of the teams mentioned (Kansas, Arizona, UCLA etc etc) and I stopped after 5 minutes because it is a waste of time. You don't need the stats to see this guys. Kansas has made losing to no name non-p5s a habit way more than the PAC 12 bottom dwellers. That should be enough right there but add to it that they never play in a bowl, rarely schedule P-5s out of conference, when they do they lose 2/3s of the time and they rarely win an in conference game. They are bad beyond belief.
There are lots of reasons to rip on the PAC 12 but comparing any of their teams to Kansas is patently unfair because they may possibly be the worst P5 team in the country.