Kotaku: The Gap Between Game and Movie ViolenceThe House of Blue Leaves fight scene in Quentin Tarantino's Kill Bill Vol. 1 is one of the most gruesome scenes in the entire picture. When it was released in the U.S., the scene was in black and white to tone down violence. When it was released in Japan, the scene was in living color featuring shots cut from the American release, under the assumption that Japanese audiences and censors could handle it.
They could. Yet, whenever a violent video game is released in Japan, it's slapped with the country's equivalent of Adults Only and will often have its violence toned down. This despite Japanese cinema, for decades, churning out bloody samurai, yakuza, and horror flicks.