Whould the Celtics Big three will beat the Spurs or Suns Big three?

I'm saying that Boston's big three (Pierce, Garnett, Allen) have the probability to beat both the Spurs (Duncan, Parker, Ginobili) and the Suns (Nash, Stoudomire, Marion). However, I know that both of those teams have a pretty strong bench and all these coaches use to play or coach in san antonio. So I'm saying, could the celtics ever beat the spurs and the suns' big three.