Part of the reason that the Big East is so deep is that there are 16 teams in it to get that kind of depth. The Big 12 can't help it that we have Nebraska (who is getting better) and Colorado and, up until recently, K-State and Baylor. If you added four teams to the Big 12 think of what kind of talent there would be as those added teams wouldn't be added without being at least decent.
And as for all this arguing, it's all academic! That is what makes college basketball one of the best sports around is that, at the end of the season, we'll know who is the best because they will have to prove it.