As we just learned, it's better to wait for NPD or official numbers to say anything. I believe, for instance, Vita is undertracked in Americas again. Shipped numbers can't come soon enough
But let me talk about Japan, since it's close to official numbers as we can get.
Vita is going thru hell! Only logic56 can view those numbers as good, because to me they are disastrous. It's really looking to be a PS2-GC type of domination for the 3DS there - with two major differences, it's getting there way faster and this time the top seller has ALL major franchises at their disposal (including obviously Nintendo first party).