Things to consider:
-> the Wii peaked in 2007 so there's a precedent inside Ninty's demographics.
-> indeed, the 3DS/Vita numbrs right now are almost exactly the same as Wii/PS3 back in 2007.
-> massive pricecut not too far from launch.
-> recent advance of smartphones in the far east.
-> Nintendo is doomed as always, you know the stuff.
-> Kaz Hirai as Sony's CEO. His mere presence is enough to hinder competitor's sales.