The only reason American Wages should be higher than Chinese ones is because America still does things that China can't do.
China still has nothing to match Google, Microsoft or Nvidia and in general American companies like Tesla, Nike etc. are more prestigious than Chinese companies.
But china is catching up. Volvo is a Chinese company now for example. Xiaomi now has the fastest production sedan in the word ( faster than any Tesla or Porsche ). Chinese are strong in Solar, Electric Batteries, Self Driving Cars and are making progress in Aerospace.
Once China moves past making toilet seats for Walmart and starts to make things that previously only America could do there will no longer be any way to justify why American wages should be higher than Chinese.