Mr. Guo Zhengliang gives a penetrating comment on comparing AI development between China and the US. His conclusion, as I can understand, is the US still has the advantage of cutting-edge research while China has been leading in the application. ( If not a relatively large portion of Chinese talents went to the US, China may be the only leader in both fields.) 

中美AI大对决！ - 西瓜视频 (ixigua.com)