They'll need as many sales as they can get especially when their competitors dont have a successor to the past gen systems yet (or current gen).
Anyways, I dont think they have much to worry about since the Wii-U will eventually sell when more first party titles will come out, its pretty much a given. Its only selling as low as it is now because of the small size the gaming library is.
Because of their current headstart, would this be considered positive? I mean, it's something, right?
Of course (not even being sarcastic if you think I am).
Gives them more impact and more time to develop games for and when their competitors release their systems which could shift sales numbers.