If you compare energy production:
China: 8.5 million GWh
America: 4.3 million GWh
3rd and 4th place India and Russia are dramatically less than USA at just around 1 million GWh.
Auto sales by country:
China: 21 million
America: 14 million
But this might be a bit skewed due to how important cars are in America, for example many poor ppl in USA will rather have a car than a home, because they can sleep in the car.
Official GDP numbers (in USD adjusted for inflation) are:
China: 30 trillion
USA: 25 trillion
India: 11 trillion
So actually looking at consumption markers, US economy is not overrated, because it really has a healthy lead on number 3. Its broadly China that is underrated.
I can't really explain why China has an abberant gdp vs consumption/output stat. One part might be that elites own a much smaller share of the economy, but that alone shouldn't cause what should be an almost 100% lead over number 2 to shrink to a mere 20% lead.
But economy isn't my strong suite and someone who is way better at this could maybe explain it.