Microsoft , Sony , Nintendo and probably all the other big companies always go with the shipping numbers, they don't actually track how much consoles sold to consumers. because thats not their job.
im even surprised how Kaz Hirai got something close to VGchartz numbers, they never went to the actual numbers just shipping, i guess they're feeling a bit proud.
I live for the burn...and the sting of pleasure...
I live for the sword, the steel, and the gun...
- Wasteland - The Mission.