Call of Duty flops on Nintendo platforms

Call of Duty: World at War performed fairly well in terms of critical reviews on both the Wii and DS, yet both versions have pretty much sold a dismal amount compared to the 360 and PS3. The 360 version of the game has sold 1.41 units while the PS3 sold roughly 600,000 copies. Disappointingly, only 200,000 units of the game were sold between the Wii and DS. This is slightly surprising since, after all, Activision has been supporting the Wii version in terms of advertising. Commercials of the game seem to appear on television regularly. And let’s not forget that the game has received positive reviews. So the only question is, why haven’t people bought the game?