The NPD Group's gaming figures for June have made the rounds, and both Microsoft as well as Nintendo have something to crow about, albeit for very different reasons. Nintendo is the most eager to prove itself and says that the 3DS has hit five million total sales in the US since it reached gamers' hands in the country. The tally doesn't compete with the heady numbers smartphone designers are used to, but it's a milestone for a handheld console whose prospects were dim until a sudden price cut fueled s