I never thought much of Nunn. I thought he ran far too much. Seemed HBO wanted him to be the new Sugar Ray Leonard.
Nunn didn't run when he beat the shit outta Tate, Roldan, and stretched Kalambay. His talent was undeniable. He never would have been SRL, but he had the talent/skills to be a great middleweight.
Nunn was the better fighter, imo. There was a reason he was thought of that highly - like X said, he was the total package.