An interesting question to start with, and frankly to speak I am not worried about your belief that US will continue to stay on top. No one around the world is ready to believe or follow "US Asian Century" instead it will be purely an Asian Century.
The only chance that US has now is to accept the inevitable and learn to be a good second grade power, something that UK and France did peacefully (mostly).
Not just this century, Asians and specifically China and India will dominate the global trends, Economy, Military Power, and influence for a long time. It's inevitable and quite natural that "No empire stands for ever" and US is no exception.
