And as NTS mentioned, X, UNI, St. Joe's, and SFA had every chance to win. Gonzaga did beat Utah. Then in the 1st round we saw Little Rock over Purdue, Hawaii over Cal, SFA over West Va, Middle Tennessee over Michigan State, UConn beat Colorado, VCU over Oregon State, Wichita State over Arizona, Butler over Texas Tech, Providence over USC, UNI over Texas, and Yale over Baylor. That's a lot of non-P5 teams finding a way to beat P5 schools. Not to mention UC didn't even have to play a P5 school and still lost. 15 of the 32 2nd round teams were non-P5. The conference affiliation excuse in basketball is incredibly weak.
It is a non issue I agree in BB. In fact in football some of the teams that have joined have been hurt by it because the powerhouse teams are now stealing recruits from their back yard. Rutgers, Pitt, Syracuse have been doing worse in recruiting than before joining. WV has done slightly better in FB recruiting ...but overall it's been a wash for those Big East teams.