The US dropped out of the talks surely. Anyway I don't think that the quality would be any different...why would it.
Chinese factors can produce high quality stuff (my iPhone 6, for instance) and absolute crap (EMPI parts for my air cooled VW).
If Ford wants the Chinese auto plant to build a high quality car they will. If Ford wants the cheapest cost per car possible the Chinese will do that too, and the end product will be a piece of crap.
I wonder which way Ford will go....