Are you saying there are 50 Million Possible Nintendo fans or gaming fans in general. I'm interested in what you predict the Wii U will end up with.

Netflix/Hulu as well as a major media feature too.  Those serices, I would argue, definitely helped to push sales of systems as well this past gen as well.  

WiiU will end around 25-30 million total,  didnt say 50 million nintendo fans i said 50 million core gamers bought the system, out of those 50 i say 25-30 were Ninty fans, im not a nitendo fan i think mario is played out but i bought a wii for the classic nintendo games that i can download so i didnt have to hook up my NES, also for some of the exclusive games they had, DKC, Paper Mario, Smash Bros and such.  not the 3d mario galaxy or zelda 

Why can't PS4 pass PS2?

I say It depends on how long the generation last.

Don't worry... We'll add tablets and smartphones to the mix to prove that this gen is selling better then last gen..

Of course Ps4 had a strong start, it came out 7 years after its predecessor so 7th gen early adopters have been waiting for it for quite long, add it's probably the cheapest PS ever made (considering inflation).
It doesn't mean it will last very long as product, it's clearly not as advanced as Ps3 and 360 were a their launch, and since it starts with a lower price tag, they will have less room for price cuts later. The Xbox One on the other side had a good launch but it's not doing so great right now.

The gaming comunity and developers have become auto-referantial witch means they are based solely on themselves and on their own desires, not caring relations with other realities. The fact, a lot of "gamers" despise "casuals" is a clear proof of that.
The industry needs games and application to attract new generations of gamers, and as long as those applications are seen as "casual games" o C-class games, these new generations of players will evetually decide it's better to spend 2$ for a tablet app rather than 60$ for mainstream game. On the other hand the inner circle of hardcore-smug players will evetually grow older and gradually stop playing.
Plus add the state of the economy in key markets such as Europe and Japan is worse compared to some years ago. I can't see the premise of another growth.

 I'm 99% sure the Wii-U had a horrible launch. Didn't it only sell ~500K units WW in it's first 7 days? The Wii did far better than that. Plus the Wii-U lost any momentum it had within a few weeks of launch when people who bought it realized that the system had nothing but shoddy 7th gen ports, weak hardware, and very few exclusives that were pretty underpar. Not to mention the Wii-U has gotten pretty much none of the third party support Nintendo promised. The Wii-U is a terrible example for already declaring this gen a flop because neither the PS4 nor XBone have dropped the ball like Nintendo did. The Wii-U is victim of Nintendo's failure. The PS4 will only get stronger within the next few years, just as previous PS consoles have. Sony has just done so much right with the console so far, and very few shortcomings it has are guarenteed to be fixed in the near future. Let's wait and compare PS4's first year on the market to the Wii-U's, and then complain about this gen failing. 

As for the Wii vs PS2, the PS2 had longevity because it was the console for everyone. Many many people still play their PS2s to this very day. The last PS2 game to be produced just released. The Wii didn't continue it's record shatterring stride because it wasn't the console for everyone. It was a console for casuals by every definition of the statement. It was for grandmas and families with small children who bought it on a whim because the vast majority of games released for it appealed to them. Once that dempographic got dried out after a few years, it steadily began to fall because fewer people from other demographics were willing to buy into it. It's why PS3 and 360 continued, and are continuing, to do so well because those consoles, like the PS2, have longevity. People don't buy those on a whim. They buy those because it's something they genuinely want and will use for years to come. Hardcore gamers, essentially. Wii-U is further proof of this. That dried casual audience probably still owns their Wiis, millions of them sitting in shelves and cabinets collecting dust, and therefor have no reason to buy a Wii-U. It offers nothing that they don't already have available for their (and obviously hardware means nothing to them). Point is, the only thing holding the PS4 back is Sony's support of it, and how long it will last. 

not really.  xbone might not look like it is doing good when you compare it to the ps4 but if you compare it to the 360 it's doing better early and similar post-holiday.   really, a truely objective analysis would have to conclude that xbone is doing fine.

...but shhh, don't like any of the xbox fans know i said that.  i have a rep to live up to.

Well, this is a definite. Most of the casuals the Wii brought in are gone. So, this gen is most likely going to see a decrease of sales to something similar, or slightly ahead of the 6th gen. The Wii U will probably sell 25M-35M. The Xbox One will probably sit at 55M-65M. And the PS4 will probably sit at 115M-125M.