My opinion on these games you're trying to tell me is a good reason to buy this console:
New Super Mario Bros. U Yawn. It's The same exact game as every other 'New Super Mario Brothers' game. Anyone who wants to play a game that actually tries to do something besides go through the motions the previous games went through will not want to play this game.
New Super Luigi U This is basically a DLC of The previously mentioned game. It shouldn't honestly count as a game on its own.
Scribblenauts Unlimited As far as I can tell, the concept behind every single one of these games is exactly the same. There's no wonder people wouldn't be interested in this game. I would play one game in the series, but I sure as heck would not want to play any more than that unless they brought in something totally new and different to the table. The art style is also very kiddish so while I am interested in the series, I can understand why normal 'gamers' would be turned off from it.
Pikmin 3 This game looked good, So game #1 as to why I would think about buying this system.
Nintendo Land "Test out our gimmicks Land".
Sonic and Sega All Stars Racing Transformed This is a racing game. While I am interested in playing it myself, it's still just a racing game. Mario Kart seems to be the only racing game that anyone I know shows interest in. A lot of people I know don't even know much of Sega beyond Sonic so they would be like "Who the heck are the rest of these characters?" Also it's not a good idea to list a game that is on multiple consoles as a reason to buy a Wii-U. Because I have a 360, why on earth would I buy a Wii U to play this when I can buy it for the system I already own and like?
Sonic Lost World This game was good on paper. They built it up and after watching gameplay of it and seeing the [lack of] story plot, I can honestly say that if I had bought and played this game I would have hated it and wished I had waited for a price drop. The game leaves a heck of a lot to be desired.
Mario and Sonic at the Sochi 2014 Winter Olympic Games Yeah... I doubt anyone besides die hard Sonic and Mario fans play these games. How many of them are there now?
The Legend of Zelda Wind Waker HD While this is another game that I have that makes me want to buy a Wii-U, it's still ultimately just a remake of an old game painted with fancy colors.
Super Mario 3D World This game is a good reason to buy the system. While it seems presented as the exact same as the New Super Mario Brothers series (only you get to play as peach this time ALSO CATS OMG), this game is totally different and has such great potential. But since most people won't expect that out of Nintendo because of their history with other Mario games (the first two on this list being a major example), this game will probably undersell or not get the attention it deserves and Nintendo will 'play it safe' and go back to not doing anything special like they always do.
Family Party: 30 Great Games Obstacle Arcade Family 'party games' are not a good way to advertise that as system has good games. Party gimmick games are the main problem I have with Nintendo and their home consoles int he first place at this point. |:
Monster Hunter 3 Ultimate I'll give you this one too. Because I want to play this game since I've never tried the monster hunter series before.
Pokemon Rumble U The pokemon rumble games aren't fun. |: I've played them. They're seriously not fun. I'm a pokemon fan and I got one because I thought it'd be neat to try something different with pokemon. Pokemon Rumble is a horrible series because you're not playing with pokemon you're playing with little dinky looking wind-up-toys that look like pokemon. Not only is this a turn-off for even pokemon fans... you have that dreaded figure gimmick tacked on top of it. Skylanders gets away with it because the figures are nice to look at. But the Rumble U figures look. Like. Crap. So that makes it even more undesirable. And I'm one of the few people who actually like the figure concept.
ZombiU Oh boy. Another zombie game. Not like there's not 500 of these already. What's that? I also have to use the Wii U game pad as well? That totally doesn't sound annoying at all for me to do in the middle of running from zombies! I sure hope my reflexes are quick enough to allow me to do what I have to do on the game pad during an intense situation!
Never get upset when someone says there is not enough good games for the console. Because not everyone has the same opinion you do. What games you think are worth buying are a waste of money to others. So, while you seem to think that there's plenty of games that make this system worth spending money on, to a lot of people, it's just not worth it yet.
Out of all the games you listed, you only listed around 5 I would even be remotely interested in. The rest actively turn me off from wanting to buy this system because I'm not looking to play games that are just the same thing as games I already have (new super Mario brothers), the exact same as or a game I can get on a system I already have (Scribblenauts, Sonic All Stars Racing Transformed), or games that I am totally not interested in playing.
I don't believe Nintendo will fail this generation, oh no, that will only happen if they keep making gimmick consoles (as well as games that do nothing but repeat the motions of older games, which ultimately makes people less likely to buy the console if their big titles they can expect to be getting are just rehashes of the same-old same-old). The Wii U has a load of potential, it just has to get the games to make it worth buying. However, right now, it's not worth buying to me. I'm getting more use out of my 3DS than I ever hope to get at this moment with the Wii U.