10 times better than Rush?
I doubt that. Wagner's an undersized 2, not a pointguard. Sure, he could score in highschool, and in college, but the NBA's a different story. He's not tall enough to shoot over people, and he won't be able to get to the basket like he did in highschool and college because the players are bigger and faster. He's no AI.
Rush on the other hand will be one of the league's best second options when he reaches his prime. He won't be a team's number one option, but he'll still score 20+ points a game. He's the best shooter in the draft, and is bigger than Wagner. You mentioned that you saw Grizzard play twice, and didn't like him, so you picked Prince. How many times have you seen Rush play?