Some more comparison numbers for those who like looking at these kind of things (like me!):
http://www.neogaf.com/forum/showpost.php?p=78714209&postcount=161
First Weeks (by Famitsu):
Metal Gear Rising: 335,791 (PS3)
Bayonetta: 138,430 (PS3) + 66,211 (360) = 204,641
Vanquish: 51,705 (PS3) + 11,798 (360) = 63,503
Infinite Space: 40,266 (DS)
Anarchy Reigns: 21,199 (PS3) + 4,170 (360) = 25,369
The Wonderful 101: 6,663 (Wii U)
Mad World: 4,651 (Wii)
http://www.neogaf.com/forum/showpost.php?p=78714649&postcount=181
[NDS] Super Robot Wars OG Saga: Masou Kishin - The Lord of Elemental (Bandai Namco) - 86.105 / 104.757 / 82,19%
[PSP] Super Robot Wars OG Saga: Masou Kishin II - Revelation of Evil God (Bandai Namco) - 81,214 / 110,846 73,27%
[PS3] Super Robot Wars OG Saga: Masou Kishin III - Pride of Justice (Bandai Namco Games) {2013.08.22} (¥7.480) - 37.266 / NEW <40-60%>
[PSV] Super Robot Wars OG Saga: Masou Kishin III - Pride of Justice (Bandai Namco Games) {2013.08.22} (¥6.480) - 18.356 / NEW <40-60%>
PS3 + PSV = 55.622
