Not sure what to make of this. World leaders typically congratulate the winners of elections, unless they are really unhappy about it, like America's response to Chavez's election. I can't see why the Russians would be annoyed by an Obama election, except perhaps that the resulting goodwill might tighten up Europe/US relations, at least for a while.
It has to be said that racism, which I normally discount as being a cause of many of the things attributed to it, may actually be at work here. Russians aren't the most tolerant people in my experience. If physical stereotypes have any truth to them, isn't this your basic cracka-ass cracka racist?