Microsoft\’s Xbox 360 may have head an immensely long headstart over the Wii and PS3, while they built up an installed base in many millions over their \’exclusive\’ period, its competitors on the other hand have been gaining ground incredibly quickly with the Wii reportedly surpassing its installed base and the PS3 growing slowly but surely. Ultimately this has resulted in the 360 experiencing a serious slowdown in sales while the competition feels no \’pain\’ from the Xbox 360\’s headstart.