Robinson was integral, as Duncan was just a sophomore and not quite MVP yet. Robinson is one of the best defenders of all time, even at an older age.
In sweeping Rasheed Wallace' Blazers in the WCF, Robinson averaged 39 mpg, 17.5 ppg, 9 rpg, 3 apg, 3 bpg, and 2 spg.
Having said that, Robinson was never as explosive after lower back surgery. But still an elite defender and shot blocker.
That championship run and 2003 certainly solidified his place in the HOF and as an all-time center. And I think he's underrated on this board, evidenced by the conditioned response to bring up Hakeem vs. Robinson (ie. that's all people tend to remember).