GTA IV Impact and Halo 3

[naznatips]

Avinash_Tyagi said:
Didn't the PS2 version of the PSP GTA sell poorly also, compared to other GTA games?

3.15m yeah, but it's basically just a remake of GTA3, so it shouldn't be expected to sell well.  That would be like complaining that RE4Wii sold less than RE4 on the PS2.