Ukraine makes WW3 less likely. If it was conquered quickly - that would make WW3 more likely (because Russia and China would estimate their chances of further conquest higher and would probably start something in Taiwan or Baltic states). Russia issued a statement just before 2022 invasion that demanded NATO back off from Baltic States, Poland, etc. If Ukraine fell quickly they could think they can force this by smal…
The fact that Russia's invasion of Ukraine mostly failed informs about the strength of Russia's military but says nothing about China's. If China is drawing conclusions they must be based on the West's reaction to the invasion, not on Russia's performance. China has been working on these scenarios well before Russia invaded Ukraine because, well, it is obvious that the West controls most of the world's economic and f…
China has all the corruption problems Russia has, even less oversight and transparency, and fought no competetive wars in which it could be tested.
I expect much worse performance from them if they ever go to a real war.
As for decoupling economy - Russia is energy exporter. China is importing resources and energy and selling products to the west. They are much more coupled with the west than Russia, no matter who services the transactions.