You're right, Jim.  I never heard Dave's account either.  It was only one perfect master at a time, never two, and Rawat had come with more power than ever before, but only after his father died and passed on the juice to his bod.  It was also explained that because GMJ revealed the Knowledge of all knowledges, that was absolute proof that he was the real deal, perfect master of his time. That meant "little" Sant Ji had ultra-mega-mega-amounts of power!