Agreed and it also depends on if it can share sales with NSMBU or will one be seen as the superior and more liked version. I think they can coexist and sell 8-12 million each.

wii U
Super Mario 3D Land-6 million
DKC Tropical Freeze-4 million
Mario Kart 8-8 million(Without Bundles)
Smash Bros for U-7.8 million
PS4
Killzone Shadowfall-4 million
Infamous Second Son-3.7 million
Drive Club-2.5 million (not including free version for PS+)
Knack-1.5 million
One
Forza 5-3.5 million
Dead Rising-1.2 million
Ryse-2.5 million
Titanfall-6 million

Wii U:

Super Mario 3d Land: 5.5 Milion
DKC Tropical Freeze: 2.5 Million
Mario Kart 8: 6.5 million
Smash Bros U: 5 million
X: 1.2 Million

PS4

Killzone: Shadow Fall: 3..8 Million
Infamous Second Son : 3.2 Million
Drive Club: 1 Million
Knack: 1.3 Million

x1

Forza 5: 4 Million
Dead Rising 3: 3.5 Million
Ryze: No idea
Titan Fall: 5.5 million

Titan Fall outselling Smash Bros and selling the same amount as 3D Mario.......Bahahahahahahah!!!!

Wii U

Super Mario 3d Land: 9 Million
DKC Tropical Freeze: 2.2 Million
Mario Kart 8: 11 million
Smash Bros U: 8 million
X: 900 k

PS4

Killzone: Shadow Fall: 2.2 Million
Infamous Second Son : 2.8 Million
Drive Club: 1.5 Million
Knack: 700 k

XO

Forza 5: 3.5 Million
Dead Rising 3: 2.8 Million
Ryze: 2 million
Titan Fall: 4.1 million 

I'm not sure how much 3d mario and smash bros did on the wii but i think it was 10 million for each, i just halfed the numbers. 

I don't think that's how it works. Especially Smash Bros, it was the highest selling game on the GC and sold more than your Wii U prediction.

But Titanfall is a new franchise. Why should it sell so much, I ask?

What does being new have anything to do with sales? Plenty of new IPs on their first outing do gangbusters.

Mario Galaxy games did around 10m no? I don't see Super Mario World 3D getting near those figures. Gamecubes userbase was very densley Nintendo fans, I don't think the WiiU is going to be similar.

I expect the one to outsell the wi u. Which is why i gave it such numbers, more hardware sales will cause more software sales and the game being an exclusive i gave it a number which is close to gears 1. As for wii u numbers i expect compeition to cut the legs of a couple of games. 

Very true, and I don't anticipate these games to do as much as the Wii counterparts. Indeed, I expect SSB to sell much more than 3D World, hence I never mentioned it in my post.

But a new IP at launch for the Xbox One is unlikely to ever pull mega numbers, above 1.8mil is out of reach IMO. A sequel could do much better, but I don't see it doing particularly well for these reasons. I could be wrong, of course. I hope so, because it looks damn good! But a new IP, for a launch of a new system, outselling Smash Bros.? I don't see it.