China only has one less gold medal than USA (38 to 39) in the last Olympics. The scary thing for the US in this Olympics is that for the first time, China would be directly challenging the US in one of their most productive gold medal events, swimming. If going by results from the last 2 Swimming World Championships, China has a good chance of taking 3 or 4 gold medals, directly from the hands of the Americans. 4 golds won here by China also means 4 golds less for America, this could be a massive 6 to 8 golds swing in favour of China.
The fear is real this time for the US.