Is The Last of Us another case of undertracked PS3 exclusive?

[ethomaz]

HikenNoAce said:
How come GT5 is about at the same number on both VGChartz and Sony's official numbers? I think VGChartz reports shipped numbers if they have it. Another example is AC3:Liberation.

Same number?

Sony: 10.66 at end of March 2013
VGC: 10.45 at end of June 2013

There is a bigger difference here.