Is Duncan generation's best player?

Kobe Bryant. Tim Duncan. Kevin Garnett. Shaquille O'Neal. As the preeminent players who entered the NBA in the 1990s, those four stars have defined an era that is coming to a close. O'Neal has already retired, Garnett is operating on a year-to-year basis at this point, Duncan is winding down at age 37 and Bryant may never be the same after rupturing his Achilles tendon in April. But Duncan's resurgent season, which will culminate with a fifth trip to the NBA Finals -- some 14 years after his first -- has offered a reminder that no star has accomplished more since Michael Jordan.

Grantland's Bill Simmons has made the argument that Duncan is the best player of his generation, which he summarized in a feature for the "NBA on ESPN" pregame show.