I still think Nintendo doesn't particularly mind what sales minutiae are experienced for Wii U over the next year or so.
They just sent it out into the wild with Mario and Monster Hunter in time for some decent Christmas sales, while they put all their might into 3DS, which has now successfully killed Vita (unless Sony goes into overdrive resuscitation mode, which they are unlikely to do), and is battling on against iOS/iPhone, its biggest competitor.
Meanwhile, Wii U has a good 12 months, possibly 18-24 months to build positive word of mouth before PS4 threatens it (and 720 in the West), at which time they will have the software line-up and advertising budget (and probable price cut, colors and bundles etc) ready to go, to stifle the PS4.
Nintendo is doomed with a 4K drop this week = embarrassingly short-sighted, or trolling.
Having said that, I may be wrong, and if a Wii U heavy Nintendo Direct is announced for this weekend, that could mean they are sweating bullets.