You said it perfectly: the massive amounts of imports to the US from China are a driving force of China’s economy. The US has been in steady decline for two decades. China is on the rise because of their massive exports to the US and the EU. Without those, China tanks, same as the US. The US will consume, and China will produce. That is the stats quo.
US weapons are steamrolling the Russian army, without any US solders operating them. Ukraine is still gaining ground daily, on every front. Do you truly believe the US couldn’t roll through Russia the way Wagner did two weeks ago with only 25,000 troops? I said it earlier but I’ll say it again: Wagner is/was proud of the fact they used western arms and not Russian or Chinese. To say the US couldn’t take Russia is naive at best, downright false at worst.
China’s industrial power absolutely dwarfs both US and Russia, so US would have absolutely no hope if it ever came to a war with China.
Your hypothetical disregards the existence of NATO and Indo-Pacific alliances. Article 5: An attack on one is an attack on all. War between China and the US would be China Russia and N Korea vs the world. Be serious here. Do you think China by itself, or China with it’s “big” 3 allies could take Australia and the south Pacific states, nearly all of Europe (including states like Poland who are foaming at the mouth to inflict suffering on Russia), India, Japan, S Korea, and DEFINITELY the Philippines and Taiwan. Let’s not forget the massive military base on Guam.
But let’s dig deeper: the US has the most aircraft carriers in world, the most veterans who have seen combat, the most ballistic missile subs, the largest air force, the most military bases, and the US has bases in Korea and Japan for exactly the situation you described. China currently has no capability to project it’s military onto US soil. They wouldn’t be able to cross the Pacific, whereas the US is already in Asia. China is not good to it’s neighbors, and many have historical grievances as well as ongoing territorial disputes (off the top of my head: India and Philippines). War between China and the US would be WW3, which both sides are actively avoiding. Don’t say things like “US would have absolutely no hope if it ever came to a war with China” when you don’t seem to grasp that it would be China vs the entire planet, and the entire planet is better equipped and on their doorstep.
No, what has actually happened is that there are two world superpowers instead of one, each ruling their part of the globe, each dependant on the other to not drop the facade so they have an “enemy” to blame at home. To say either single country could take on the other is probably the worst argument you tried to make