Yes and no.

Wii U will sell less than GC in the same time, but since Wii U could have a longer life, it could sell more

For all that you wrote ...I have a simple answer mario kart 8..... fastest selling mario kart game ever on any nintendo console .......2 million in less than a month on a user base of 6.17 million and the wii u mario kart bundle is sold out in all the major cities and stores on the east coast look it up (gamestop,target,best buy) so your notion that appealing software doesn't move hardware or that it won't move hardware or hasn't is very flawed lol and also wii u didn't appeal  to most people was because there was not much software and no advertising  the first 9 months to 12 months now that issue is resolved it's now a lot of software available and a lot of people were waiting for mario kart 8 ...now the system is more appealing and will continue to be more appealing in which software sells hardware ....

1. Mario Kart 8 is not the fastest selling Mario Kart at all, Mario Kart Wii and 3DS sold over 2 million in 4 weeks easily and Mario Kart SNES and 64 sold a million in 4 weeks in Japan alone.

2. You completely misunderstood his post, he doesn't say anywhere that Nintendo games don't move hardware, he said that they won't push enough, because they don't appeal to enough people. You point out MK8 as if it in any way supports your point when in reality it really doesn't at all. So the bundles are sold out in some places, and? That literally tells us nothing, if we don't have any solid numbers. What we know is that the Wii U has already fallen below 10k in Japan again, that it sold just over 60k in May in the US, that Mario Kart is already dropping steadily in the UK and, if we put some trust in Vgchartz numbers, that the Wii U is overall going down pretty fast again after Mario Kart.

None of those indicate that the Wii U is now more appealing to the general customer, that the Wii U has a bigger chance of doing better than the GC now, that the Wii Us issues are now resolved (I mean lol, really?) or anything like that. If at all Mario Kart 8 perfectly illustrates his point, Nintendo franchises sell great to the Nintendo fans, who are the ones buying the Wii U anyway, but still only have a limited fanbase and will thus never be the things that will sell more than 20-25mil Wii Us lifetime.

Why would nintendo stick with a product longer then they stuck with a product that was selling better? Wii U won't make it past 2017.

BTW - it makes sense that the MK8 bundle is sold out... Don't expect that to change. I went to see if it's a discontinued product and when I looked for a bar code on the sales floor there were no spots for it. Targets website says not sold in stores. I'm pretty sure it was a very limited bundle.

I'm not really sure I understand your post. Do you think that the Wii U needs more sports games? And I personally believe that the Wii U will sell more than the GC. Why does the Wii U need to be a mass market product?

Only one Nintendo home console has hit 75m, so first party titles certainly don't always do it.  The Wii U has already had a lot of the games that made the Wii such a success.  NSMB, Wii Fit, Wii Sports, Mario Kart, Wii Party, Just Dance, etc.  If all these once massive franchises lead to the Wii U selling 68k just two weeks after MK8, how will it make it to 75m?  On June 14, 2008 the Wii was at 27.7m and selling ~300k (sometimes quite a bit more) a week.  So it already had a 21.3m lead over the Wii U in a similar time frame, and was gaining by nearly a quarter of a million per week.  That means in a few months the Wii will already have a 26m lead over the Wii U.  Which in turn means that the Wii U will need to start matching Wii sales from that point forward to hit 75m.  To put that in perspective, a five week period during the 2008 holidays saw the Wii sell more than the Wii U has lifetime.

The comparisons to the 3DS and PS3 were never great, but it is getting ridiculous now.  The 3DS turned things around in about 5 months, and was selling considerably better than the Wii U even before the price cut.  Only the 2 weeks right before the price cut saw 3DS sales lower than the Wii U 2 weeks after MK8.  The PS3 again turned things around more quickly (holiday '07), and was doing better during its "slow start" compared to the Wii U.  As of June 14, 2008 the PS3 was 108% higher LTD, and had 352% higher weekly sales.  To be fair that was MGS4 launch week, but that is still 133% higher than the MK8 launch week. The PS3 also stayed higher than the MK8 launch week for five more consecutive weeks.

How much do you expect those 4 games to sell?  Even if we're optimistic they probably won't be higher than 20m combined.  So assuming zero current Wii U owners buy them, and zero people buy more than one game, that means the Wii U would still need to sell 55m on the backs of other games.  So far it has managed 6.4m with 1.5 years and quite a few formerly massive franchises.

35 Million is my prediction. Possibly 40.

The launch of the wii u was so misleading. I think it will sell less than the Gamecube as well. Maybe 15 million.

Wow. Go ahead and say that it will sell less than the Gamecube, that's fine. But don't make my eyes bleed because I had to read that ludicrous prediction of 15 million.