Two differences: Garnett is 6'11"/7'0" and Wright is 6'9"/6'10", those couple of inches make a pretty big difference. And Garnett is thin, but Wright is Kevin Martin/Quincy Douby skinny. I'm not saying he can't put on weight, just that he's going to have to. He was getting pushed out of his spot in the post in college, it's going to be a real problem in the NBA.
I think he's got some great athleticism, unfortunately he didn't do a whole lot when I was watching. I need to watch him a few more times.