In the end it will have to be some sort of compromise, not only between the EU and UK but between the half of the country that voted to leave and the half that voted to stay in.
I don't think we could expect the UK, on it own to get the same trading arrangements as either the USA or China and, I don't know about you but I am not aware of exactly what their trading arrangements actually are. It would be a very distorted view of who we are to believe we have the same weight, when it comes to negotiating, as the two largest world powers