The analysis on Gamasutra based on NPD result
"The PSP version of Grand Theft Auto: Chinatown Wars is particularly troubling. The PSP has played host to both Grand Theft Auto: Liberty City Stories and Grand Theft Auto: Vice City Stories, and each has sold particularly well. Yet in its launch month Chinatown Wars didn't even make the PSP software top 10 list at retail – it placed somewhere below #10, the PSP version of LEGO Batman.
While it is possible that some of the PSP's retail sales have moved to downloads through the PlayStation Store, we think it unlikely that those sales are the key reason for the weak retail performance."
MikeB predicts that the PS3 will sell about 140 million units by the end of 2016 and triple the amount of 360s in the long run.
