Well that is quite a premature announcement isn't it? Saying that there is a winner before the battle has even begun, is what this is. I'm not saying PlayStation 4 won't win, but it is definitely in the best position to sell the most software and hardware this Eighth Generation. Microsoft's Xbox One can still and most likely will be a successful console, but with the attitude towards Xbox gone negative, it could be tough.
Exclusives help sell Hardware and that will get people buying Xbox. Who has the best exclusives? Nintendo.
They may of had a rough first year with the Nintendo Wii U, but with exclusives like Mario Kart, 3D Mario, Metroid, and a Smash Bros, they can sell a lot of Wii U's. (A price drop may also help too.) So I think Sony are in the best position; followed by Nintendo then Microsoft, but it's too early to absolutely tell yet...

There is always room to screw things up. There are many things going in Sonys favor, yes. But after I misjuudged some stuff (and gaming companies too), I'm not too sure about the things I think and forum-goers think. We will have to see, how well PS4 and X1 launch and how well they sell into the new year. That will be interesting. so far I'm not convinced, I will lose my bet against Ninjablade (first 5 weeks of PS4 vs. WiiU, I lose if PS4 sells more). So lets wait and see, before we declare a winner.

I think PS3 will sell  better than the bone and both will be much greater than the Wii U. Remember when 2D Mario was the in thing to win a gen from Nintendo fanatics? I do. The Wii U has it now and is selling like a turtle. I do not think Mario Kart, nor Smash Bros will do much for it. 

Depends on the true Zelda being made. It will decide this gen.

Mario never sold a console by itself

I would never think such folly. It was a popular belief put forth mostly by a certain Nintendo fan that has almost a cult following on here. The idea was that having 2D Marios on a console would gurentee a Nintendo Sales victory. It was a very popular belief by some.
 So am saying that the games I mentioned will not create a huge sales rush for the Wii U. As those are often examples of what will cause the Wii U to sell like a market leader. 

Yeah, just like every other gen that they've participated in.

PS4 will win, but it won't dominate

(pats on head - no not going to challenging your points cause I don't feel like it.)

Now, now dear, things will be fine.

How do you define winning?

I think the everyday mother and father are going to go for the cheaper option for their children, the wii and its motion control "gimmick" worked well because it was so cheap and fun.....xbone might be "fun" but its not cheap