Declining Wii sales in Japan?

[Bodhesatva]

It's a matter of a couple of things, most notably DQ:S. Kotaku looks back two weeks (when DQ:S was released, although it doesn't mention that). What happens if you look back three weeks? Three weeks ago, the Wii sold 74k, which is less than it did this week. In short, we saw a burst of sales for DQ:S, then back down again.

If you crop the picture like this, you can say that any console is declining. Just follow this formula:

Start your counting in a week when a major game is released.  Then track the two weeks proceeding it.

Ta da! In almost every case, you'll see a sales spike for the week of the game's release, followed by a decline. It doesn't mean Wii sales aren't stabilizing (they probably are), but it's poor evidence of a long-term decline.