I have heard that Japan is more tolerant of sexual depictions, while less tolerant of extreme violence (*guro"), and the United States is the opposite. A lot of overseas releases of anime/games are censored for mild nudity that passed Japan's rating association. And some popular districts advertise erotic games on massive billboards under large crowds of pedestrians. On the other hand, a mission in a Call of Duty title was changed in the Japanese release so that it immediately ends with an admonishment if you try to shoot civilians.