Here's a quote from the link you present "but regardless of how you cut it, China has higher tariffs than the United States."  While the link quibbles with Trump's apparent assertion that the US charges zero tariffs, the link agrees that Chinese tariffs are higher and that a VAT tax imposed by China also drives up the price of US exports.  Bottom line:  If you don't like Trump, he's wrong, or if you do like Trump he is essentially correct.  Ask any business folks who do business with China and they will tell you there are a variety of obstacles which make US sales to China more challenging than the reverse.