I think it's totally within the realm of reason to believe that Wii U has sold around over just over 5 million units by the end of 2013. I also find it to be completely within the realm of reasonable expectations that those sales should get another boost in a few months when Mario Kart 8 launches. Wii U will be fine, and isn't in the "serious trouble" that they posit.
Honestly, considering how shitty it sold for much of 2013, how it recovered within the last 3-4 months is rather impressive.







