Do you guys honestly believe that the jumps aren't big this time around? You're kidding right? Much higher textures, actual AA this time (just for consoles though, PC has always had this), dynamic lighting, MUCH better particle effects. And instead of being sub-720p and being upconverted, it will be native 1080p.
It's like going from what we have already to CGI level graphics. In real time. If you don't think that the jump is huge, you are blind as a bat.
(Plus, better specs means [hopefully] better and smarter AI, but that can be seen with a trailer or screenshot.)
@Ian: Yes, sadly. The Wii U is 7.5 gen and PS4 is 8 gen, comparitively.