The crap is already out of the Yank clowns; how else do you think they elected a German as president who brought Gestapo/Stazi culture to ICE, turning the educated portion of the country into victims of all the angry high school drop out racists? China doesn't even wanna scare them anymore; we're all about business and bettering ourselves.
There is no need for China to surpass them in gdp. When China's nominal gdp gets closer, after just 20% appreciation, that will create big pressure on trump. In any ball game, creating pressure on your opponent will increase their chance of making mistakes.