I agree though Murray seems to be saying, in the quoted passage at least, not that they're comparable in size or power, but in there being a "capitalist elite exploiting the working class" and that they're even worse on civil liberties. Theoretically at least, these could be regarded as separate issues to whether they are competing superpowers, though he may well be implying that.
wrt the quoted comment at least he may have a point, since, according to an article in WSWS:
Three percent of the Russian population controls 89 percent of the country’s financial assets. Ninety-eight Russian billionaires have more wealth than the combined savings of the entire population of 144.5 million people. Real incomes have been falling for years and are expected to further decline as an estimated five to six million workers are expected to find themselves jobless by the end of the year.
I just think it's pure hypocrisy to criticize a system of economic concentration and exploitation that we imposed on them or the state of civil rights that our own policies undermine. It's like knocking someone down and putting a jackboot on their neck while criticizing their failure to stand up and breathe normally.