I don't buy the youth argument on them either. They start 2 seniors, a junior, and 2 sophs that both played quite a bit as freshman.
I think they've just "missed" on a few recruits. They don't have that go to guy, for starters. And several of the other frosh/sophs just haven't panned out. Much like Willis. They have too many guys like that. Bad chemistry. It happens. Teams like this really make me wonder how good a coach a guy like Williams would be if he hadn't spent much of his time at KU/UNC, where getting the best of the best is easy. What if he was at OU, or maybe even UT. Could he coach up a less talented roster? Interesting question that we'll never know the answer to.