It doesn't help that much of the PS4's launch lineup in Japan is ports of things that have launched on PS3 months ago. Same day Yakuza: Ishinn, and MGS: GZ should prevent it from completely cratering, but I think a lot of people on GAF (amongst other places) are overestimating what DW8XL, BF4, COD:G, and FFXIV will do for the platform.