PPP like windchill temperatures are not considered serious or absolute measurements.

Tell me,  what is the PPP price of gold, for example

PPP includes such nebulous concepts as ‘how many times a week can a family of four afford to go out to eat’

Without going into the differences between eating at the Four Seasons in Manhattan and a hole in the wall located in a small village in rural China, you can see why this is not a ‘real’ measurement..