Five years ago, you could maybe make an argument that, well, they only won with one coach and the next guy won with his players, and then they fell off the map.
Now it's 3 different coaches. Like Emeka pointed out, it's in 4 different decades. On a championship basis, there's no argument.
The only argument you could make against us is inconsistency. Our non-title years over the last 15 years we've often been irrelevant, since 2009 only 1 Tournament win in non-title years (though the fact that we have 3 championships in that period makes that caveat look silly).
Edit: I didn't realize that in addition to having the most championships in the last 25 years, we also tied for the most Final Four appearances. That's pretty significant.