Basically all I'm asking is will Wii U be up, down or flat year over year in 2015?

I could see it going either way. 2014 has had Mario Kart & Smash Bros which are arguably Nintendo's two biggest console series. One problem though that Wii U faced this year was once again suffering droughts in between major releases.

Feb-Donkey Kong Country

May-Mario Kart 8

Sep-Hyrule Warriors

Oct-Bayonetta 2

Nov-Smash Bros U

Dec-Captain Toad

A bunch of solid games but as u can see there was a 3 month gap between DKC & MK8 followed by another 4 month gap until HW released. From that point on the release schedule was a bit more consistant. While it doesn't appear that Wii U in 2015 has games on par with MK/SSB in terms of system sellers but with a more consistant release schedule along with year round advertising (hard to advertise throughout the year when u have 3-4 month droughts) and a price cut sometime in the middle of the year, I think Wii U has potential to sell better next year.

Q1-Kirby+Yoshi (Captain Toad in Europe)

Q2-Mario Maker+Splatoon+$50 price cut

Q3-Xenoblade Chronicles X+Star Fox

Q4-Devil's Third+Zelda+Mario Party+$199.99 black friday/Christmas bundles

If Wii U has a lineup like this with television advertising for each of these games then I think Wii U will be up YoY, of course all of this needs to happen. If Wii U once again has to deal with delays and droughts then I think it will be down YoY.

Hard to tell, depends on which games get delayed or which games get announced! It is basically, 2014 = two big system sellers vs 2015 = way more games (if nothing gets delayed) but I will say 2015 cause there should be a price cut in 2015 along with more games

2015 will be the better selling year out of the two.

Depends on if there is a significant price cut. If there is then Wii U will do better in 2015.

2015, pretty much for sure. The Wii U should have a considerably higher baseline during the 5 first month (the time until MK8 released this year), which was only around 25k-30k a week in 2014. Having more games coming out should also mean that baseline doesn't drop out as it did between MK8 and Hyrule Warriors this year. And then Zelda at the end of the year yo finish it off neatly.

Basically, 2015 would be more streamlined, highe sales overall with less pronounced spikes.

Also, europe seemed to become more interested in the Wii U lately, might have quite some effect it the sales rise in that region

To be fair non off those games except zelda look like they could move consoles. And maybe xenoblade. Hopefully should sell more but could quite easily sell less

2014 has Mario Kart + Smash, which are bigger than any of the 2015 franchises.

But 2015 will almost certainly have a price cut to $250.

So I'd say it'll be a wash.

Will be up slightly, depending on price cuts.

Will be up slightly and after that continue going down in the years after.

The Wii U is trending upwards, I think that continues in the next year.