Which country is the most powerfull one?

China According to firepower china ranks third http://www.globalfirepower.com/ but if u look at the military manpower,they outscore us by 5 times and if u take artillery also they out number Us by 6 times and infantry by 15 times. With the nuclear power that each country has now adays its these things that count when considering a country to be superpower. And china has a better oil consumption level and almost 10 times gold reserves.So if a war rage china will ve at a better state than the US

it has to be United States of America..which is touted as the worl's most powerful country

i think america is the most powerful country in this world.