Wait, what chart did you get that at?
This site says something different.
http://www.vgchartz.com/Still number 2 (X360) and 3 (PS3) in Europe and number 3 and 5 in the U.S isn't bad at all. # 4 and 5 in the world. It's great in fact.
I am a bit baffled the PC version isn't in the top 100.
Global
1 3DS New Super Mario Bros. 2 323,797
2 X360 Darksiders II 208,798
3 PS3 Darksiders II 195,268
4 X360 Sleeping Dogs 163,779
5 PS3 Sleeping Dogs 135,389
6 Wii The Last Story 81,701
7 DS Pokemon Black / White Version 2 60,120
8 Wii Dragon Quest X 46,402
9 PS3 London 2012: The Official Video Game of the Olympic Games 42,987
10 X360 London 2012: The Official Video Game of the Olympic Games 42,304