My apologies. I made the classic mistake of assuming everything I knew was known to you, which when you're as intimately aware of half a topic as I am is both extremely easy and extremely foolish. My bad.

Of course this is 'just' my opinion, i can't actually see the future, this thread is about guesses. 
The same goes for your statements, like "The Wii U will peak before the PS4 does as well so that gives the PS4 even more time to outsell it."

For my statement about PS4 doesn't offer much beyond a PC: Anything the PS4 can do, a PC can do as well. Only difference are the exclusives, and to my opinion that's not a big value compared to PC which also has games you can't play on PS4. While the WiiU offers more appealing exclusives (to me, this is opinion in case that ain't clear by now) + easily accessible asymmetric gameplay. 

The rest i already answered in my original post. Answered in terms of guessed, as this thread is about guessing.

And how are the WiiU sales flat now? They have been flat at around 30k per week for quiet some time. Then a big peak at MK8 release and now around 50k/week. So they have been picking up since MK8 which is just several weeks. So further picking up over the next months/years is -again- a guess. I guess so because i think its a great machine and more releases of popular quality games like SSB, Zelda, X, Bayo2, etc are going to come.

What is your reason to state (not guess), that there is "NO CHANCE" the Wii U could outsell the PS4? Can you see the future?

Okay that's cool adn I can understand that. And my reason to state the Wii U has no chance to outsell the PS4 is basically just going by what is right in front of me. The Wii U has already has it's biggest game releast in MK8(no other NIN game moves more consoles than MK). And it still could not surpass the PS4, it will pick up more sales when SSB comes out and will get a nice boost for a few weeks as well but I can't see SSB doing what MK8 couldn't.And with the lack of 3rd party support the Wii U will be hurt a lot more in the long run as well.

The Wii U already has every advantage in the book to be selling better than the PS4 or the XB1 even and it isn't. It has been on the market longer, it is cheaper, it has more games and higher rated games. So in eseence the PS4 shouldn't even be beating it if you think about it in that sense. Like you I also think the Wii U is a great machine with some excellent games and more coming. But I also think the PS4 is an excellent machine with some great games and more coming. Not only 1st party but lots of 3rd party support as well which is an advantage for the PS4 and XB1. I guess my no chance statement was rather strong to say the least.And it came off as fact which it is not a fact at all. But I can't see a scenario where the Wii U will pick up in sales to the point that they surpass and stay ahead of the PS4 when thinking about those things.

Don't get me wrong anything can happen but I just can't see it.

3DS+WiiU+Vita currently doubles PS4-sales. For your prediction to come true, PS4 must double sales or the others are dropping to half for a longer period of time. Seems currently unlikely.

Same is true for PS4. The casuals that helped to increase the sales of the PS2 are now absent. No Dance Dance Revolution or Singstar will change that.

Indeed it will...

Well, I think:
PS4=100M
3DS=75M
WiiU=35M
Vita=20M

So Sony wins by 10M.

Only time will tell...

Yeah, but for now, i said this, because PS3 the week of 30 Jun, PS3 have sold 61,231 unit...now look the week of 25 Jun 2011, and resul almost triple: 166,266...

I predict that the week of 2017 on June, PS4 will have costancy of 250,000.

Did I insinuate that the casual market cared about ps4, or anything about the playstation brand for that matter?  At this point in time the ps4 doesn't need them anyway.