China to overtake us economy!!!!?

From recent economical reports, china will become the richest world much earlier than expected. Originaly it was estimated at 2025, but the latest reports show 2015.... What changes will this have for everyone, everywhere? Economicaly, there will be no change from present other than for china who's economy will slow and may go into recession, as chinese workers demand higher wages....i think however that two super powers would be good for world stability, as the u.s.a.and china would never wage a war on each other, if they did then their currencies would anhilate the other country and their own and this would be used before actual war so its nver going to happen. But america will always, for many centuries to come i am guessing still lead china in the cultural field....canyou see beijingwood re-placing hollywood? no neither can i, and who speaks mandarin lol.....Anyway, what are your thoughts :) thank's