Yup.. They are going to be as bad if not worse. A lot of people are going to be pretty shocked. Just don't say I didn't warn ya :P
All you need to do to is look back 5 years, when PS3 and 360 started slowly. Now pile a shittier economy, and probably higher prices on top of that, and you can get an idea of how bad things are about to get. Now, that's not to say that will continue to sell poorly, after all look at how PS360 got it together. I even think it's possible if not likely that EVENTUALLY they will outsell Wii U. But I think it'll take 2 or even 3 years for sales to really pick up, and Wii U will keep a lead for awhile.
I think most people are more than happy with their PS360s at the moment. Why should they upgrade? Especially when these consoles are still getting games. And I think most people view their graphics as "good enough." Sure the people at sites like this are excited but let's be honest, they repressent a very small core of gamers who are always looking to run out and buy the next big "thing" in gaming. How is the average consumer, who doesn't live and breathe gaming, going to view these consoles?
The other thing you need to consider are the games. What are the major franchises that will sell boatloads of PS4 and 720? You've got the declining Final Fantasy series, declining Halo series, Call of Duty (which is multiplatform, and has probably peaked), GTA, and not a whole lot else. I just don't see too many huge games that are going to push sales of these consoles, at least when they're at the $400-$600 range.