A little further information that suggests that other factors were in play. By 2013, the last year in the Big East, attendance was down to 10,728. One could argue that bad basketball, having a team that lost to Northeastern and Wagner in the same season had as much to do with the decline as being in the AAC. If UConn had been a National Championship contender, Elite 8, even Sweet 16 over that period, attendance might have stabilized around the 10,000 mark, where it was arguably heading anyway. Oh, and all my figures come from the NCAA attendance reports which are published annually.
As to Villanova, another way to look at it is 32 of the last 35 NCAA basketball champs played FBS football. So maybe it does matter. Factors like bigger and better athletic departments, facilities, training, support all contribute. The fact that an outlier won a couple of times is just that. An outlier won a couple of times. B