Not surprising at all, really. Like many already have pointed out, since the Vita has sold so little more of the instal base are hardcore gamers that buys a lot more games. I think both the Gamecube and oXbox had a higher attach ratio than PS2.
and besides, I made a thread before where I concluded that the 3DS still is a better platform for 3rd parties.
I'm on Twitter @DanneSandin!
Furthermore, I think VGChartz should add a "Like"-button.







