I'd say the key here is stability. The post-WWII Pax Americana was at least stable. The USA each day moves towards a Putin-esque 'might-is-right' oligarchal mod

I'd say the key here is stability. The post-WWII Pax Americana was at least stable. The USA each day moves towards a Putin-esque 'might-is-right' oligarchal model, and that transition to their new world will be painful for them. Meanwhile China and Europe can agree to be frenemies and note that they're both going to make the least crazy/unexpected bat-shit decisions of the big 4 geopolitical regions.