Tim Duncan is simply put, the best PF of all-time. Karl Malone, that great Laker, showed what he was about when he choked for Utah in the late 90's Finals. Timmy has got four titles, with three MVP trophies, to go along with two regular season MVP trophies, 12 All-Star games, 13 All-Defensive teams and 13 All-NBA teams that he has made.
His career is clearly on the downside, and he has trouble keeping up with the more athletic PF's (hence Amare Stoudemire scoring well against the Spurs last playoffs), but in crunch time, he has been clutch more times than not.
Surely Coach Greg Popovich will reduce Duncan's minutes further to keep him fresh for the playoffs. Just as Doc RIvers' approach of managing minutes helped propel the Celtics to the Finals, Duncan may be very willing to follow suit for the games that matter the most.
Laker Pau Gasol is being called the best PF of today; however, the advantage that Stoudemire had over Duncan, his athleticism, is not matched by Gasol. And what Duncan does is match up better at 7-0, 260 lbs than did the 6-9, 245 lb Stoudemire.
Also, with Brazilian big man Tiago Splitter (6-11, 260 lbs) coming over, the Spurs match up better with the Lakers big men now, as opposed to the 6-9, 245 lb gritty, gutty Antonio McDyess.