[DiogenesKynikos]

China is still far behind the US on a per-capita basis, but China has a lot of people, so the overall size of the economy is similar (larger in PPP terms, smaller in nominal terms).

I don't think anyone here believes China is ahead in terms of average standard of living. This graphic is just about the overall size of the economy.

[kwere]

the economy wealth level should be about disposable income PPP after accounting for shelter, food and other basic necessities