You are all a bit daft, Generic warfare is pretty much dead in the water. In our world controlled by money and production, and therefore the countries with the largest capabilities to produce i.e China control the world.
The US is in so much debt to China and is so dependent on Chinas manufacturing that all China has to do is beat down America ergonomically and then just wait for the teetering tower that is the US economy to crumble.
The US economy is a dying horse, It is on its last legs and will fall within the next century, It can not hold up its production or development and civil unrest is a stones throw away.
TL;DR:
Wars are not won with weapons, They are won with market control.
China wins all.