This is the first time I heard of this. It is a stupid theory. Currently, US have all the advantage to remain as the most powerful. The only country that could surpassing US, is China, but won't happen, if Communist is in power. Reason ancient China and modern US is powerful is same. (1) In confucius ideology for example it believe unite with the masses and don't create little circle to conspire against others, thus fellow countryman don't turn on one and other, over issue such as race, religion, culture, heritage, most modern American have such spirit. Thus, prevent civil unrest and allow utilized full man power of a nation (2) Strong nationalism, mean people are united (3) mass population, so a lot of man power (4) A government system that allow the nation to function well (5) Result of 4, it have a clean just and well function government system (6) As a result of 1,2,4 and 5, is a 1st world economy (7) they are industrialized (of course, ancient China's technology is not as advance today, so they use more traditional techniques, e.g. people working in factory line) (8) Mass usable land to grow food for large population (9) vast nature resource. (10) They don't isolate themself from the world.
After US civil war, US got all 10 above, so, by WW1, US became the most powerful. If the US keep on this path, it would remain as powerful as it is now. Ancient China, fall, is because they moved away from this path. (1) By late 17th century China was in civil war, giving Manchurians a chance to attack, Manchurian Empire rule, Taiwan, China, Manchuria, Mognolia, Tibet and Xianjiang and create a system better fro securting their power, but not effective, so (2) after some bad policy, by late 18th century there was economic melt down, civil unrest, corruption and finally civil war. After overthrowing Manchurian Empire, before they can recover completely, Communist came.
Communist (1)maintain a system that help to secure its power but not good for China, so (2) China government remain corrupt as a result (3) remain 2nd world. (4) To secure their power Communist teach "Those who are same race, culture, heritage are our own, others are enemy, so we must unite against them." and kill people who speak out against it, for treason. These are keeping China as a 2nd world country, thus can't surpass US. If this 4 problem is resolve, China would surpass US and become most powerful, but US won't fall