The PS3 increase is probably due to HD-DVD dying. There are quite a few people who were on the fence, waiting to see which HD format was going to win, and now they're buying their PS3s. Probably not a lasting boost of any great significance, but who knows?
The drastic drop in Wii sales is undoubtedly due to Nintendo diverting stock somewhere else, but I really can't understand where. Brawl just hit Japan a few weeks ago, and the next big thing is the same game arriving to the US. It's still quite a few weeks away, and sales shouldn't have slumped anywhere near this much.







