Nintendo 3DS which is selling in Japan at record levels sees its sales increasing, it is perceived as poor.
Wii U which is also seeing its sales increasing with nothing new since last week, it is perceived very mediocre.
But an rebound of Playstation Vita sales of about 12% according to Media Create and 2 or 3% according to Famitsu following a price cut, several games realeases,it is perceived as INCREDIBLE !!!
I think I will never be able to understand this kind of logic...