The truth as I see it is that all the consoles have continued from where their last Gen forebears ended, the PS3 ended very well while the Wii didn't as it got a lot of casuals onboard earlier on in its life and got tagged as a none core gamer system, a notion further helped by it being massively underpowered compared to its competition.
The Wii U is still being viewed as a kiddies/casuals console by a lot of gamers and it is not helped at all by the media, I speak from personal experience about this as I kept telling a friend at work about the Wii U (which he kept referring to as the Wii for over 6 months), then he came visiting one day and I put in 'Sonic All Star Racing transformed'' and the first sentence he uttered was 'That isn't a Wii' to which I replied, 'That is what I've been telling you for the past 6 months' , so many people have never tried the Wii U and saddle it with the Wii's legacy whereas the Wii U tries to be 'All things to all men'.
The PS4 is currently selling on hype and the legacy of the PS3 which finished the strongest in the last generation but not on its current game selection, even the expected Graphic improvements has been quite underwhelming. My younger brother for example currently regrets selling off his PS3 and a decent collection of last gen games (which includes Uncharted Drake's deception) to be an early PS4 adopter. The only game he likes so far in this current gen is NBA2k14
Sony should be careful not to get complacent with their game output or else what is going on in Japan might well spread worldwide. It seems the Japanese market is the least influenced by Hype. For them, it is all about the games unlike the 'Fanboys' of the Western world, no matter their orientation.