You don't know much about post-Cultural Revolution China, do you?
The pipeline attacks are a recent development so I won't attempt to refute it.
The U.S. didn't have a one child policy with a focus on male offspring. Their demographics are cratering much harder than the U.S.
And even then, you've only mentioned alliances, race-culture and demographics, which speaks nothing toward finances, economics, liberties, rights, governance, ect. In all five of these factors, China fails catastrophically, no one is motivated to innovate or even work hard because China actively discourages hard work by constantly meddling in the laborer's affairs, moving them in and out of cities, shutting down bank accounts on a whim, repossessing property when it suits them, operating on a party cronyism system to the detriment of merit (being with the right people makes you money, not hard work (the top general for the Chinese military is the illiterate grandson of Xi Jinping (yes, he cannot read)))
The U.S. is corrupt in spite of design, China is corrupt by design.