Well if we took a gaming style attitude to judge what the super power is then....

Military: Considerable amount of army. Equiped with fairly modernised weaponary and nuclear weapon stash which is enough to make other countries tremble. However if we think about their army, they should be fairly weak as China still have one child policy. I mean what kind of family wants their only son to die in war? So low moral but if they can improve this maybe..

Economy: One of the best.. Almost all goods is "made in china." Their cheap labour doing a mass production. Their economy is pretty influential.

Life standerds/ Production: This is related closely to stability. As China it self is not that stable (corruption... like that whole milk incident) many Chinese immigrates over sea. But the chinese over sea are still part of china I suppose..

Culture: Not as much as western life style but Chinese is pushing their culture. Theres a China town or chinese community in almost every city. Plus Kung Fu movies is slowly getting more and more populer (Kung Fu panda even came out)

Technology: Cant exactly say cutting edge but fairly advanced. Cities are also well developed in the Eastern coast city it is almost as advanced as cities in the western countries (and Japan and so on...). If they can improve their country side a bit then they might easily flog USA.

I guess its just the matter of how united and organise Chinese people can be. Right now it seems like a race where America is slowly getting caught up, China catching up and India is running few hundred metres behind China but catching up.

Its still a super power I guess