Why is the PSP lowering in the US and Others and rising in Japan?

[Words Of Wisdom]

hunter_alien said:
Japan is a much-more handheld-oriented region than the US and EU . The DS reached its saturation point , so its obvious that the next system they will move onto will be another , different handheld .

I love that comment.

So once the NDS has dominated the entire market and has completely run out of potential buyers, then the PSP will become a great success.  The iron-y levels in that comment could kill a small kitten (as could my horrible pun).