If to look attentively, the conflict wasn't ideological that much. The ideological conflict was inside of USSR, the elites of which sustained very illogical and irrational model of self-isolation, idealism and prodigal foreign policy, as all the population opposed and critisized, laughed at that. Nobody believed the BS about the imperialistic West, countervise - the more obvious idiosy was told, the more idealistic the West was imagined. The black-hole of self-isolation of USSR helped to paint the Cold War as ideological contradiction, as only few people in the West knew the reality inside of USSR.
The scenario you talk about is realizing right now. The main sharp reasons of the conflict exist no more. The body of Russian civilisation comes through the reforms and modernisation, the Chinese do the same even better. So just watch and observe the hypothetical becomes real, we live the history every moment.