There will be a pretty significant gap between the Wii U and PS4/720, what we know of the leaked PS4/720 specs show them to be well beyond the Wii U.
It may not be quite as bad as last gen, but that doesn't mean there won't be a pretty large difference.
A lot of hardcore gamers are already biased against Nintendo to begin with, lets be honest, so that doesn't help either.
If a game like Star Wars 1313 is available on Wii U, 720/PS4 ... and 720/PS4 versions run at 1080p + better graphical effects, higher poly count, higher frame rate, etc. not many people are going to buy the Wii U version, then the excuses from developers will start ("oh the Wii U version didn't sell great, so we're pulling resources away from it"), etc. etc.
This is all so predictable, happens to Nintendo over and over (and over) again.







