You are kidding. You look only at stats I guess. He has been an Allstar every year. Rookie of the year. 3 NBA championships... HOly Cow waddya want. If the Spurs did not have Duncan now or any year they would barely make the playoffs if at all.
Duncan has the best hands of any big man ever. Thats what allows him to have the most varied post moves of any player in NBA history. He is now in his downhill physical years. So he has to rely even more on saavy than he used to . ANd he was injured last year. He could have been the leading scorer in a number of years if he played on a team like Phoenix but he plays on a team that is more concerned about taking time off the clock on offense, and playing shut down defense.