I don't think he looks any different. Statistically, he isn't playing any better either. The difference is, Dudley is a sub par athlete with a high IQ, a selfless player who doesn't care about his own numbers, put a guy like him on a terrible team where no one knows where to go, how to rotate, how to spread the court... and he just looks like another stiff, and a fat one at that because of his pudginess.
I think the Suns made the mistake of thinking he was a leader, a guy who was going to elevate other players. That isn't him, he's a great complimentary player and a guy who can get under the opposition's skin. It's reeeeeeally hard to get under the other team's skin when you're losing by 20.