If you give Duncan two top 10 players at their position (the most important position in the game) then yes.
I find it amusing how you constantly knock your bigs when Kobe has two of the top 10 bigs in the game and BY FAR the best front court duo in the league.
If you are a top 5 player, and you have two other top 20 players with you, there are no excuses from a talent standpoint. Look at MIA. Their role players (lol Curry, lol injured Miller, lol Cole, lol washed up Shane, lol joel anthony) suck but they have a similar talent build in their big 3.