You're mistaking the tools of the conflict for its cause. The conflict arose because the US finally realized China is a threat (as China knew the US was all alo

You're mistaking the tools of the conflict for its cause. The conflict arose because the US finally realized China is a threat (as China knew the US was all along). Which one plays more unfairly is just a tool in propaganda efforts of each side to draw people and countries to its cause. Which is not to say there's no moral difference between the two, just that it's mostly unrelated to the cause of the conflict. In other words, you won't convince the US to allow themselves to become more vulnerable to China, by pointing out their sins in South America. Similar holds for China.