It seems like one board always sees more action: Black saw more traffic than White, and so on.
Which is understandable: some games just look more appealing. Red and Blue, most wanted the one with the "dragon" on it than the one with the turtle. While Zekrom is certainly pretty cool looking, I think most went with Black and Reshiram because he's also cool and is an actual Fire/Dragon, which I think people wanted more than an Electric/Dragon. And so on. The devs seem to expect one to more popular than the other even if it's not a huge difference.
I kinda think perhaps they expect more people to get Y, but who knows...the X legendary (it will be a while before I master their names lol) is no slouch at all. One is awesomely-destructive, one is awesomely-majestic.
So which game/board do you think will be more popular? --- The supernatural says that if you act a certain way you might avoid suffering. But reality says you came from the stars...