Hmm. I'm a little unsure of this, if it includes the nintendo-land pack in for the deluxe set or not. If it does, then about 1 in 5 people are buying a second game to go with their wii u. I don't think I'm alone in thinking that a game should suffice for a few weeks if not months, especially at this price. People are being more frugal with their money.. or at least their not spending it on this. I can't really believe the former statement. But a Wii U can be expensive, as ideally it should have great multiplayer games focused on your living room, and that takes controllers (which of course adds a significant cost)!
Also, does it include downloaded games?