The problem with VGChartz' way of estimating the PS Move user base is that it doesn't take into account the many players that had a PSEye years before the Move controller got released.
I'm as much a new PS Move user as someone who bought a Move bundle, yet all I needed to get was the stand alone motion controller. VGChartz doesn't track such users. I know I'm not the only one in that scenario, so the VGChartz way of estimating the PS Move user base is open to major error margins as to make a more decent estimate, we would have to make a direct correlation between the amount of stand alone PS Eye camera sold since it came out with the amount of stand alone Motion Controllers sold to date. This is just not possible. There is just no way to determine the amount of such controllers being sold to people who already owned a PSEye beforehand.
