^Nintendo is already doing stuff, it's only a matter of time for the Wii U. I didn't expect Wii U to do well now because it's competing against all the people buying PS4's and Xbox One's. What's important is that the numbers increase compared to when they were at they worse and stay higher; even if the other systems still do better, that doesn't necessarily mean the Wii U is doing bad anymore, it just means the gaming industry is doing better in general, if that makes sense.
To throw some numbers in, if the Wii U now sells 100k worldwide every week on average for the next 3 months, that's a LOT better than before; but even if the PS4 and Xbox One somehow manage 200k a week worldwide (which no offense, I'm shaky about due to supply issues and the fact that launch hype/sales WILL die down), I see that as more of "the Wii U is doing well, but relatively poorly", not "the Wii U is doing bad".
Anyhow, the fact that 3DS isn't a new system and is putting up those numbers is crazy, I hardly believe it. I guess part of it is the miracle of handhelds--that and there were some serious good deals with the 3DS XL and 2DS's. What I mean by the "miracle of handhelds" is just that handhelds are easier to get bigger numbers IMO; the systems are generally cheaper than consoles and families are much more likely to own multiple consoles.
I mean, I alone own 2 3DS's and want to get a 3rd one, and my sister also has one--by contrast, it's usually rather silly and uncommon to have two PS3's in the same house unless there are some special circumstances. I also have a Vita, but I can't ever see my sister getting one because she's not a mid-core or hardcore gamer and most of the titles don't appeal to her.
Anyhow, I'm kind of scared to see how Super Smash Bros. is going to affect this all--I really want the Wii U version to do well (I kinda wish the Wii U one would come out a month earlier to get people to buy Wii U's lol, I'm one of those guys) but in all seriousness I can totally see a lot of college students etc. getting 2DS's or 3DS's to play Smash which might come to like, a $150-160 rig or so, which is not too bad considering how popular Smash is. It's portable which makes it convenient and it's an awesome multiplayer game, if they have good online 3DS Smash might become a highly portable eSport lol (there was talk about it being included in Major League Gaming or something :P).