But not all games need to sell as much as those games. Some games is ok with selling let's said around 800k as the budget can make it break even if it sells around 200k. So the sales number can be highly deceiving.
Sure, some games can break even at 200k or so, but that kind of goes back to the point of Nintendo not releasing "big" AAA new IP's.
With the Watch Dogs/Destiny/Gears of War examples I gave, that was the publisher saying "we're going to try and make this new game as popular as our biggest franchise". Activision wanted Destiny to be their next CoD and they went out and made it happen. Didn't even matter that the game was mediocre in the end cause they had millions of people hyped as fuck enough to pre-order the game in record numbers.
I want to see Nintendo attempt something like that, something that would interest millions of people and be a system seller, to set out trying to make a new series that can be as popular as Zelda and Mario. To see them swing for the fences and go all in. That would be exciting as fuck. Nintendo is certainly capable of doing this, but they never even try.
For example The Wonderful 101 was a fun game but it never had any chance of being a system seller, or even selling that well to existing Wii U owners. It was a niche game that Nintendo never really got behind or promoted, they just put it out there to have a Wii U game on shelves in August or whatever. It served no other purpose than that. When you put out a game like that and it sells just 5k copies in the first week, that almost doesn't count in my book. It feels like a complete waste.