I'm not sure why so many people are down on Dunleavy. He's actually a pretty good ball handler. He never reached the potential of being picked #3 overall, but he's a very good player. Good shooter, rebounder, and passer, not a bad defender.
I think he gets a lot of hate due to the fact that 1) he went to Duke, 2) he was over-hyped, and 3) his appearance (must be the floppy hair). Otherwise, he's a very solid player.