About the WiiU performance:
1. Its performance was totally predictable. We saw, prior to the Christmas period, that neither SM3DW nor the packs had a big impact on the baseline console sales.
That doesn't mean that they didn't had an impact, in fact, despite being down YoY (the console was still benefiting from being near to its launch week in that time past year) I doubt that the console will go as low as 5,000 units sold in a week this year.
2. The Christmas boost was higher than anyone could anticipate in comparison with the GC era, which means that the "Nintendo" brand is much stronger at this point than it was back then. That doesn't mean shit if games aren't there, but it's something positive when it comes to potential sales of the system.
3. The release planning has been absolutely terrible for the WiiU. Why did Nintendo concentrate every single platforming game on the first year of the platform is still beyond me.
I mean, is Iwata idiot enough to not see that with that kind of strategy, the console will have a really limited appeal?
Even for the japanese market, where 2D platformer games are popular, that's a bad move.
On the other hand, this also means that once this is somewhat corrected, sales can improve. It may be too late to save the platform's profitability, but it's undeniable that the appeal of the system once Mario Kart, Smash Bros, X and Zelda are on sale will be much bigger than it's now with New Super Mario Bros. U (2D platformer), Super Mario 3D World (2D-3D platformer), Sonic Lost World (3D platformer) and Donkey Kong TF (2D platformer) as their main exclusive games.
This console needs VARIETY that now it's only provided by the few 3rd party PS3/360 ports and some indie games (which aren't clearly enough to attract new buyers per se).
I still think that the WiiU could reach a "healthy" 6-7 million LTD sales on Japan if Nintendo does what has to be done and doesn't repeat mistakes like the one I pointed, but if they continue with this idiotic (more like "Iwatiotic") path of "we only make games of a single genre" they won't reach even the 4 millions LTD they reached with the GC.