This was obvious for people with at least a bit of technology knowledge, but not so much for people that only know what gaming sites and blogs tell them. And the latter were the ones making a big deal out of it.
It should be pretty clear that the Wii U can do anything the PS4 or Next Xbox are able to do, albeit at a lower resolution/framerate/scale/quality. It is not a Wii vs PS360 difference, where the technology inside them was totally different, combined with a big difference in power.