Rak was a PF when he came in, only moved to center because Coleman didn't do what he was expected to, and you think a McDonalds AA would sit behind BMK? No, your argument doesn't work.
He was lost on defense as a sophomore too, same reason he didn't play big minutes as a freshman.
His conditioning has been awful since he arrived (I'm sure its better now after looking at his pictures), he was heavy coming in, he was heavy as a sophomore.
I'm not sure why you're pulling things out of thin air. He's been a disappointment, even without the injuries. He was a big time recruit that came in and he didn't do well. It's that simple. I never once have watched him play and said to myself, "Wow, that guy is a skillful basketball player". It's no offense to him, he just isn't skil lful, he's a big guy and does big guy things, some well, some not so well, that's about it.