Consider also that when GPD of the richest 300m Chinese surpasses that of the GDP of the USA, that is the point at which the battle is essentially won in favour

Consider also that when GPD of the richest 300m Chinese surpasses that of the GDP of the USA, that is the point at which the battle is essentially won in favour of China, because they will be a larger high-GDP market than the USA at that point (and with better prospects going forward). This point will come far before the GDP per capita is equal.