Again, please stop posting. If the best players aren't in the NBA then where are they?
Pretty sure these "weak" NBA players (read: Black) still dominate regularly in international play, but please keep on with your moronic rhetoric.
Anyway, Duncan was way, way more fleet of foot in his youth and would be an absolute terror even today on defense. Yes, the game is a lot more perimeter oriented but you still have big men of varying sizes and skills littered throughout the league.
People/Gottlieb are speaking like he had Jahlil Okafor - level athleticism/ lateral quickness. Guess what, he didn't. TD was an underrated athlete especially before the mensicus tear which led to the arthritic knee.