You have simply assumed that the economic measures against Russia will forever tie Russia to China's orbit. That is precisely the outcome that the Western countries should avoid by toppling Putin and any authoritarian that may follow him. Russians are much more culturally and racially predisposed to the Europe's population than with that of China. It is only Putin's hangover of Soviet Union that puts Russia politically against Europe.
Europeans also do not like China's politics. The China EU trade deal spectacularly failed because the EU wanted to separate trade and politics; thus keeping their liberty to criticize China. This did not work as China was not able to accommodate European opinion about its political set up. Once again, the Europeans will choose US any day over China.. expect for when they want to sell luxury commodities
I'm Indian origin, but that does not mean that I spend my time worrying about the economic prospects for India. There are a billion Indians who can do that better than I. It is obvious that India's security interest is better served by a future where Russia is democratically aligned with the west. This may come to fruition if the global players play their cards right given the global sentiment in the Ukraine crisis. As a Chinese, you'd prefer to think that China will win in any eventuality. But the future is not yet written