Funny, but every Mobil 1 oil I've used with any amount of PAO in it has kept my engines sparkling clean. So in my mind, it is strictly a marketing issue. Good on Valvoline.
Out of curiosity, does Valvoline Restore and Protect contain any PAO? If not, what is in it that is doing all the cleaning?
I'm currently running Mobil 1 Extended Performance 0w20 in my Jeeps and it is still showing, IIRC less than or equal to 30% PAO, which is down from its older formulation, but still substantial, in my estimation.