7'1" is actually a pretty terrible wing span for a big man. He will struggle to find success in the NBA blocking shots and rebounding and that is the only thing you could say he showed any promise at doing.
Favors, for example, has a 7'4" wingspan. Which is more in line with Howard (7'4.5") and the other quality big men in the league. Even a guy like Noel is 7'3.75".
I recall seeing an article on here that said that virtually every big man prospect that became more than just a role player had a wing span of over 7'3" no matter their height (it might have even been 7'4"). You have to have long arms to play the post, especially if you a defensive oriented player.