I'd be careful with the "not even close" stuff.
CC is a great passer. And her gravity on the court, alone, makes life easier for her mates on offense.
But quite often, she makes life hell for her teammates, on D.
Jacking up 30 ft misses also makes life very difficult for her teammates.
PB is one hell of a team player. She sets her teammates up. Is obviously more defensively friendly. And her ability to get her own, late clock, makes life so much easier for her mates.
PB's mates also seem to naturally gravitate towards/accept her leadership. She's emotionally steady, and has a natural winning confidence.
No doubt, overall, both players make their mates a lot better