A counterfactual is something that has not happened, but could reasonably. The question is not what China has done, since China has not been a world superpower,

A counterfactual is something that has not happened, but could reasonably. The question is not what China has done, since China has not been a world superpower, but how they are likely to behave once they are a superpower. When you argue against the U.S., you have to compare it against what is likely to happen, not what you would like to happen. I think Russia, the last superpower, is probably a good example of how China will behave. And there the comparison makes the U.S. look somewhere between ambiguous to relatively benevolent, depending on how you weigh various wars and geopolitical maneuverings.