DerNebel on 08 September 2014
All of the big three hide their NPD numbers for the same reason, they don't people to see how one or all of their systems did.
Sony just make short tweets about the PS4 being first, because they don't want people to see the poor Vita performance (a press releases mysteriously leaving out the Vita would be pretty conspicious)
Nintendo often says nothing or just uses percentage increases to hide the actual poorness of the numbers.
MS says nothing nowadays or talks about the Xbox family or uses percentages as well to hide the performance of the X1 compared to the PS4.
