It makes sense that they wouldn't have anywhere near as many copies as those two games, a $90 game isn't going to sell as well as a $50 game, especially an untested new game versus major franchises, and because of the inclusion of the balance board the package is pretty big and stores probably don't want to have too many in stock piling up. Nintendo said in Europe, and I would guess they'll do the same in America, that they were going to keep restocking quickly for the first few weeks.