I've PvP'ed in different brackets on my Alliance alts all weekend and I only faced Russian realms... Not a single EU-EN realm.
Someone ingame mentioned this could be a sign that there are so few players (at least pvp players) left that the chance you get a non-russian realm is very small.
I dont know if I would agree with such a drastic view, but it certainly is strange (and unpleasent, some of them use cheats and many join in premades even before 90).
But still... it leaves me with a uncomfortable feeling somehow... Could subscriber numbers be getting that low?
Or could there be a different reason? Mind you I played well over 40 matches the last 3 days and ONLY encountered Russian realms :S