I wonder if the lack of non-con games this year (there were fewer in the end, right?) made it harder to compare across conferences. Certainly any computer rankings like KenPom rely on inter-conference games to determine the relative strengths of the teams... could be the B1G overperformed in a small sample size early on, and looked great the rest of the year as a result (until now).
They have too. If a bunch of conference teams get "pre-ranked" really high, and all they do is play each other, they are going to stay high. SOS really distorted the Kenpom rankings. I think the efficiency numbers that Loyola put up in a bad conference tho were absolutely relevant