The Golden State Warriors are clearly in the realm of greatest team all-time in their sweep of the Cavaliers in the 2018 NBA finals. But officiating can still play a part in the result, or add injury to insult in this case.
An important aspect of winning can be seen both on and off the court around the politics of officiating, There are illegal basketball moves on both sides, when you have defenders chasing Curry and his teammates screening to get him open. So the way the officals call the game can greatly shift it one way or the other.