NVIDIA, it's a console, what do you expect? It doesn't really matter, if the PS4 is comparable to a low-end PC, the WiiU is comparable to the shit I use at school.
Specs don't matter very much for consoles as long as the games, especially multi-plats, are optimized enough to run well on one or more consoles of the same generation. As long as, theoretically, a game from one console can be ported to another without loosing too much fidelity, we won't end up with the Wii situation this gen, and for console gamers, it won't matter as much either.
As for PCs, members of the holy master race must have the best, and therefore, specs do matter, simply because we care about them, and we care about the increase in visual fidelity and choice that requires higher-end specs, as well as running a heavyweight OS and background programs.
Console gamers don't care as much, setting aside blatant fanboyism, about graphics, as long as it's comparable to the other consoles. They chose consoles for ease of access and price, not for the satisfaction of knowing that your $800 PC can run most games at higher settings than PCs, that you have a superior selection of control methods and games, but that they can simply boot up the console, take up a controller, and play their favourite games.
They don't really care for choice or graphics that much, just that it looks reasonably nice, it's easy to use, it doesn't cost $800 dollars, and that it has games that they want to play.
Specs don't matter as much for consoles than they do for PCs simply because consoles don't require high-end specs as much as a PC does.