Not to defend the NBA, because I hate the NBA, but just for basketball I do have to say that the NBA is not nearly professional wrestling.
Do I think the refs are told who should win? Not so sure.
But I'm 100% positive that the players are not and at the end of the day guys have to make shots to win. The refs can make calls, and be a factor, but if it's a 1 point game and Kobe takes the last shot the NBA has no control over that shot going in or not.