Ball-dominators can't beat good teams while carrying the scoring load because they lack sufficient brand of ball at high scoring levels and therefore need all-time scorers at sidekick like Kareem, Wade, AD or Kyrie
Otoh, off-ball players like Curry or MJ maintain good brand at high scoring burdens, so they can beat good teams while carrying the scoring load and can win with secondary scorers at sidekick like Wiggins or Pippen.
