Well of course Iwata isn't going to get up and say "lulz, WiiU is totes dead, peace out". What he did cover at the last investor briefing was a half hearted "maybe some of these GamePad focussed titles will change things because we can't price drop or cut the GamePad out" and then no further elaborations on where the incredibly troubled WiiU was going next, while also totally sidestepping questions as to its total death as a third party supported platform.
The slides that also pointed towards the next devices sharing game engines between portable and home was their focus going forward alongside QoL. The reading between the lines there is "yeah we know WiiU is gonna ride out into oblivion, heres where we're going next time around".
His hands are tied on a WiiU price cut at the moment because the company is losing money and 3DS is in a sales decline. Several things could change before the release of MK8 though, like production costs going down or currency conversion rates. I personally think there will be a price cut and large marketing push for MK8's release in late May, they know it's one of their final chances to get the system moving.
The stuff about the future is just that, the future, where the handheld and console will be "brothers" as he put it so game development is much faster and linked accounts will be possible. Is the 3DS "dead" because he talked about the next handheld aswell ?...
The QOL product is in his own words a separate venture from their main console business and was a glimpse of the future for investors.
Are you really expecting Mario Kart and Smash alone to turn the consoles fortunes around, or some random GamePad game to revolutionise the world, honestly? Is it perhaps not telling that pretty much all of this messageboard accepts the WiiU as a done deal, even most of its totally ardent supporters included in that analysis? There is no way back from its sales. The "wait for _____" meme passed beyond anything to even consider as a serious viewpoint late last year.
Did you even read my last post ?... I already said that no one single game would "turn the consoles fortunes around". It will take a combination of good Gamepad focused experiences, much better marketing, more big name Nintendo IP's (like DKC, MK, Smash and Zelda) and a price cut to $249 / £179 / Y25 000 to have any significant impact on hardware sales.
Also if "message boards" got everything right all the time then Platinum's games would be 10 million sellers and no one would have bought Xbone because 720p is so last gen.
It should also be noted that when I'm talking about things that could change the consoles fortunes for the better I'm in no way suggesting it will suddenly catch fire like the original Wii and sell 50+ million units. At best I see WiiU selling 21 million units Worldwide and only then if the console is supported until Spring 2016.