What the US is truly omnipotent at is their ability to push their historical revisionism as the prevailing narrative such that even its critics are often successfully gaslighted.That's a hilariously bad example. Why would China want to fight the US directly in Vietnam? All China did was to warn the US not to attack North Vietnam, and the US never did. If anything, that's a demonstration of Chinese power.
China standing by during Vietnam War becomes a show of American might cowing China rather than US war strategists nervous of repeating MacArthur's Yalu blunder and not taking China's warnings seriously. As a result, the US never directly invaded North Vietnam.
WWII becomes a tale of brave America rushing to save its European brethren ("The New World coming in rescue of the Old" as Britain's Bengal Famine inducing then PM would gush) rather than the reality of the US solely declaring war on Japan and only being drawn into Europe because Hitler declared war on it.
The Cuban Missile Crisis becomes a story of the US resisting courageously putting its foot down against Communism on its doorstep rather than as a successful counter-play by the Soviets to get the US to withdraw its missiles in Turkey.