And thats impossible to happen for potential gsmes like Mario 3D Land 2, Dragon Quest 11, Monster Hunter 5, Pokemon Gen 7?

3DS: 85m
WiiU: 16m

Wii U - 35m

3DS- 120m (if 2DS sales are included)

Since none of those are the biggest franchise in the world, I'm not surprised that sales for those games (those that have been released this gen) have gone down.

Lol ps4 and xboxone will get all the support from 3rd party not like wii u.

Yea but people don't really buy Nintendo consoles for Third Party... The wii sold 100 million and majority of the sales was definatly not cause Cod or any other third party games was so great on the wii (cause they weren't compared to the ps3/360)... Look at the 3ds, Again, virtually no Big third party hits in NA... and its still selling better than the Vita... The Vita has Cod and Asscreed but the 3ds is still selling about 30 million more handhelds

Ok so only the biggest franchise in the world can make hardware sales increase with its second installment on a peticular console, that makes perfect sense.

The second part of ur post is irrelevent to what were talking about.

Gamecube fail even with Nintendo First party,you say people don't buy Nintendo for Third party but people also don't buy playstation and xbox one for first party but for third party.

Nintendo dogs are bigger then any game on Vita.

Nintendo also had arguably better third party support on the gamecube than on the wii cause most of the games were either minigames, terriable ports or had motion controls that did not work, so third party didn't help the wii much either... One of the main reasons the wii sold so much was cause of stuff like wiisports and wii fit which were also made by Nintendo... So yea, I think people do buy Nintendo consoles for Nintendo games

Another thing you should also think about is, Gamecube had Super Mario Sunshine which a lot of people didn't like. It had Wind Waker which also a ton of people didn't like cause of its cartoon art style even though it is a great game. Really the only games that were great on it was Metroid, RE4 and Melee ( I am sure I am missing a few more but those come to mind atm)... On the wii however, there was Brawl, Twilight Princess, Super Mario Galaxy 1/2, Metroid, Skyward Sword and many others which are also some of the highest rated games in many websites to date... 

I really don't know where the 3DS will end up, but would 60 mill be good for Wii U? If this is a long gen as I expect, they could turn it around once they get actual good first party games.