I'm not sure which one you're responding to.

Wiiu will win japan this gen

I don't get it. It probably will be?
All indications point to PS4 dropping below WiiU next week and recovery is not certain for months with actual releases of interest. I'm not sure how you so confidently expect PS4 to outsell WiiU and make up for the full year's million+ lead so quickly?

anyone thinking Wii U will be ahead lifetime is too young to understand how things work.

You can think Wii U will be ahead during it's lifetime, it is possible maybe, but it wont during all the generation, because PS4 will last longer.
It's insane to think a 4 year console(be realistic) with 1-2 big system seller only by year will outsell a (at least) 6 year console with all 3rd party support

most likely yeah ps4>wiiu lifetime, especially with your points as Sony has by far the best Hardware legs (like nintendo dominates everybody else in SW 99% of the time).

That said its too early to tell. For all we kno WiiU can sell 3mil-4.5mil lifetime and ps4 can do 3mil-7mil lifetime (this gen will be down by alot imo).

Also WiiU successor might come out by the time PS4 starts to take off (2016/2017) and hey. The idea of nintendo fusing HH+Console can screw over Sony in the end.

I mean nobody guessed 3DS>>>>>Vita before both was released! This is why we speculate! Chances are obviously much better for PS4>WiiU but its not set in stone either

Do you have any proof for 3rd party support for PS4 in Japan? For me it seems that Japan game makers shifted to 3DS/Vita/some niche PS3 games and waiting for how the things will turn out. 

I think the Wii U will be ahead for the rest of the year, it's getting too many releases compared to the PS4.

Need proof for the obvious ? all the japanese games come on sony console because it's the only console with all the big games since microsoft doesnt exist there and nintendo hasnt all the multiplatform games, so the public for their game is on sony consoles so they release their exclusive games on sony consoles ( and we are talking about home console you know that) , that's why i said you need to be enough old to understand that fact, it's how it is and  how it will always be until Nintendo can get  3rd party support that matters on their home consoles, even with the Wii ahead of the PS3, the PS3 had far much more 3rd party support, japanese 3rd party mostly support sony when it comes to home console.( and yes, you cant do all the games on handheld ).

There was already far more exclusive projects developped for PS4 than there is for any other next gen home console( a new tales of, a game by Falcom, a game by team ninja, a game by Suda51, a earth defense force, a game by Level 5, a game by from software, a game by Nippon Ichi, ...) whereas the PS4 werent even available, when the sales will improve ( FFXV, MGS, Resident evil 7, etc.( let alone KH3 coming in 2016 ) ) , other developpers will come on PS4, that's how it worked for Vita, that's how it will work better for PS4 since it will have a lot more big system sellers.

Wow, Resident Evil 7 already announced? Stop speaking fantasies and just write a list of confirmed japan 3rd party games with a names and release detes (or at least release year!). Bullshit like 'insider says that level5 makes a game for ps4 and that game will be more popular than Bible' will not be accepted.

You perfectly understand what i mean, dont spin it, (and it'd be silly to think Resident evil 7 is a fantaisy, it will happen sooner than later) all these big games will be only on PS4, that's the point.

You asked me proof of 3rd party support on PS4, they are proof, all these projects are officially in developpement, whether you like it or not, if you cant accept the truth, it's an other problem.