He almost qualified due to win %, which doesn't necessarily reflect much for mediocre centers that don't really help a team win or lose. But he gets 1 point in that column, just like Yao does for leading all centers in scoring.
Whoever said that if you were to poll the coaches about this is right. The choice they would make would resoundingly be Yao Ming. No doubt in my mind. Yao Ming is the best center in the league, bar none, and I'm tired of certain morons and the media trying to dispute that.