China executes at most a rounding error of the US prison population. 2005's high of 10,000 is less than half a percent of the current US prison population, and they would need to have been performing at that high for seventy years to hit the US population. Furthermore, they have a billion extra people! Nowhere close to the American rate(!) of imprisonment. (They'd need approximately five times as many their official imprisonment rate 'off the books' to equal US.)