Why is the Xbox 360 and Playstation 3 doing so terrible in Japan?

[DKII]

360 is marketed pretty poorly there and has a lot of games that don't appeal to Japanese gamers (shooters, sports, western RPG's). PS3 has a similar problem in that it has had no game releases for months for Japanese gamers, though it's selling more based on the Sony brand and its use as a Blu-Ray player.