Nah, there is always the possibility for the Wii U to completely break down after 2015. There is however absolutely no possibility for the Wii U to sell 6m in 2015.
You mean like how xbox one now continues to outsell ps4 weekly in the usa. Anything is possible just like how ps4 losses ground to xbox,wii u could also gain ground too. The ps4 hype train is slowing down here in america so lets see what happens.
Wii U is not Xbox. Xbox sold very close to PS4 all year in US even outselling it a few times long before the holidays. And it is still not selling anywhere else. The X1's slight recovery in US is no miracle considering the circumstances. In fact, I predicted long ago a recovery for X1 in US.
Wii U isn't even selling at a cheaper price with high class quality exclusives. The only chance I see for Wii U reaching 15m in 2015 is a price drop to $100. And that is not even a real chance.
No it didn't. It outsold it last year in Dec, and has only won Nov NPD this year (and will probably win Dec by a couple 100Ks). And only a few of the "normal" months were even that close, with the PS4 usually outselling it ~100K+. If MS does put the XBO price back to $399, it's very easy to predict how things will go. Nov and Dec proved that the XBO needs to be at least $50 cheaper PLUS come with a few free games for it to even take the US. IDK, I just don't think MS, more importantly the higher ups and investors, are going to agree to throw money at the Xbox dvision for the next few years just to win the US by a few M's. Not when it comes at the loss of profit, when the PS4 is selling at profit and still doing great.
Edit: Though, I do agree with you that the Wii U and XBO aren't exactly in the same situation. The XBO should probably double the Wii U's sales numbers. So, around 40M-45M.