Firstly i'd like to aplologise for sounding like I have any sort of insight , I know people witk 1K posts frown upon "newbs" doing so.
But I think that comparing PSP software sales to the nintendo Wii sales isn't vary fair at all , considering the nature of both devices , it's almost like comparing the sales of Car accesories to Bicycle accesories , it doesn't really yield any meaningful or useful data.
And i'm very suprised the the number of PSP million sellers , alot more than I though. Congrats to the Wii too but it's to be expected with such widespread demand for it now , the number of million sellers is likely to grow this year by alot.