Clyde's numbers never really dropped though and even in his last year he was still getting close to 20 a night.Clyde Drexler fell off at around this same time. So did Vince Carter, Dwyane Wade, Shawn Kemp. Julius Erving maybe one year older.
Iggy when he was even younger than that. Hell, Blake Griffin is falling off right now.
You can really tell which players had games that actually are predicated on athleticism.