The 3DS is another Nintendo phenomenon now? I think people want Iwata to step down because he has badly bungled Nintendo's only two product lines. But that's because I don't see the 3DS's performance as some kind of phenomenon. As far as I can see, everywhere but Japan it's anemic at best.
The 3DS sells over a hundred thousand per week in the U.S., and just under a hundred thousand in Europe each week. It sells just above 40,000 per week in Japan.
A lot of the growth of the 3DS will be in the U.S., and Europe and is actually reaching a saturation point in Japan.