TheLastStarFighter on 28 February 2014
The definition of "saved" is obviously the key here. I think these titles such as MK8, Smash and others will push Wii U to solid sales. Also, the early launch will help in the long run, along with price cuts. I would expect between 40 and 60 million lifetime right now, unless said life is cut short for an early successor.
If by "saved" you mean contend with PS4 near the top of the market, no they won't. The only thing that can do that now is a key new innovative IP like Wii Sports or Brain Training that catches fire; or possibly the acquisition of a major 3rd party publisher, bringing their titles exclusive to Wii U.
