I disagree, it demonstrates that the US government has a hard time prosecuting Russians.
Actually, it only demonstrates the effect of the lack of an extradition treaty with Russia.
We're splitting hairs here, so what about the possibility of Russian and US law enforcement cooperating under the Mutual Legal Assistance Treaty, or similar agreements, but not extraditing?
Russian hackers/coders are good and there is no doubt about it. Former USSR mathematicians and scientists were always good so it so no surprise that Russians have strong cyber security and cyber crime minds. People like to downplay it but the trend is there. I recall carderplanet, one of the biggest credit card fraud community in the world, and some recent nasty malware that were developed there. Gotta give them credit.
Or the the lack of a extradition treaty to the west - dont want Andrey Lugovoy extradited The MET police and presumably the security service have some questions they would like to ask him a few questions.
"Those sneaky fucking Russians."
...or more likely to be identified due to poor skills.
Or how good they are at receiving exploit infos from FBI/NSA, who create them.