Eclectic, it worked well against US aircraft in Vietnam!
Also the west has not gun up against Russian kit operated by Russians for a very long time. I think the wars you mention and the way they went more reflects the quality of the military forces of those nations rather than the equipment.
Many have underestimated the Russians before and paid a very heavy price for that. Never underestimate the Russians.
When it comes to the west and its wars the Russian and Chinese people are fully behind their governments, they think one day the west may go against them, a kind of who will they attack/invade next?! Through these wars we lose any possible means of portraying ourselves as the good guys to the people of so many nations. We make ourselves look like the bad guys.