The sales of the 360 are going up in Japan.

[Bitmap Frogs]

The 360 is simply stuck on the limbo all non-dominant consoles are in japan: low regular sales, spikes for some titles then back to regular suckage. Japan has always been a one console country and so far there's no room for anything besides the wii. The ps3 is in the same boat as the 360, just that the regular sales are slightly higher - but it's still the same trend.