In your scenario I can see the Xbox being a bit ahead at first, then having PS4 to surpass it the rest of the year, then become equal again on holidays...

For me I'd say:

Wii-U 60m

Orbis 60m

Durango 60m

All depends which markets open up over the next 10 years, stronger activity over Asia could really off set the scale.

PS4- 100 Mill
Xbox-80 Mill
WiiU-55 Mill

First month, XBox wins (unless it comes super expensive). NA usually buys things first, EU is more about constant sales. Playstation is all about legs.

But I will take a shot at the final sales. For me, will be bigger than current gen when all is done:

PS4/Orbis: 120
X720: 100
Wii U: 80

ps4 100 million
nextbox 95 million
wii u 35 million this one i'm pretty sure of.

Wow Sony has never seen those types of numbers. Those are original Xbox/ Gamecube numbers. Sony has never been that irrelevant to people and I doubt they ever will be.

If Halo 5 was the launch title, than that would give the Nextbox a big advantage, and would beat PS4's first week sales.
But since its not, I think PS4 would win it.

However, realistically, since Nextbox is rumored for November 2013, I expect huge first week sales cause of Christmas approaching. PS4 hasn't really been given a date, but April 2014 has been said a few times, and if that's the date, then it would have smaller first week sales than the Nextbox.

Only 3.6 million Vitas sold in 2012 despite launching in Japan a few weeks before the start of the year, and in the two major territories very early in the year, and with 10 months to build up to a possible worldwide holiday break-out. Sony has been on a fairly sharp decline.

I was referring to the main consoles and the last PSP sold fairly well. The Vita I can totally understand why its not selling. Its getting harder for handhelds to sell in a market thats being swallowed up by apple and android at this point as well Its a great piece of hardware that I like better than the DS but the DS has it where it counts and I will not be investing in a Vita until next gen most likely when it has exclusives.

Smartphones aren't a good excuse for the Vita's poor sales. The 3DS is still selling very well. Sony's problem is that they have become more irrelevant to people, so people aren't going to buy a Sony console just because it says Playstation on it.

WiiU 80 Million
PS4 80 Million
XBOX3 50 Million