According to the wiki page

https://en.wikipedia.org/wiki/Wii_U

The wii u was over 3 million by the end of 2012 and close to 3.5 million at the end of March. However that was the start of the cliff edge where sales dropped considerably.  On the wiki page it says shipped but in the comments on the wiki page it says 3.5 million sold in the first 3 months of 2013.  It seems like in reality there was about half a million difference. Of course the Switch may not have the big slowdown of the wii u or that slowdown may come after a more significant number of units has sold. 

But there's still one thing worrying for third parties, even taking into account your point:  1-2-Switch has sold more than ANY third party game.

Alby_da_Wolf said: Are NS third party games utter shit, or it's Ninty gamers that just don't want them and poop on them as soon as they see them?

At this stage I think it's more a matter of third party Switch games just not being that appealing so far. Street Fighter is an overpriced port of a last gen XBLA game, Bomberman is the kind of thing that should be a $10 eshop game rather than a full priced retail release, LEGO City is a 4 year old port, etc.

There simply isn't anything so far that offers even close to the same kind of value as, say, Zelda.

Zelda and MK8 I can totally understand. But can somebody please explain to me how did 1, 2 Switch manage to sell more than Puyo Puyo, Lego City, Dragon Quest Heroes, The Binding of Isaac, Just Dance, Disgaea 5 and Skylanders Imaginators COMBINED!!?

One cant help but wonder: Would 1,2 Switch have sold as much as it did, if it had had another developer's name attached to it?  Like, EA or Ubisoft?

It's easy to explain. All of the third party titles are ports and most of them late ones; additionally, these ports got marketed like low-key affairs, i.e. not much at all. Furthermore, not all of the listed games have been released worldwide and a couple of them had limited printruns. On the other hand you have 1-2-Switch which is an exclusive for a new console and heavily advertised.

If 1-2-Switch was made by EA or Ubisoft, the marketing effort would have been significantly lower, plus the publishers' reputation would have also had a negative impact on sales. When a company name is associated with shit, then it's harder to sell games. Such a reputation is built by each company itself, so it's not anything that Nintendo could help third parties with. On the other hand, Nintendo's reputation is good enough that any of their games is given the benefit of the doubt by many consumers. Said reputation isn't going to suffer from one disappointing game, because the other titles Nintendo has put out for Switch so far make a strong case to keep trusting Nintendo.

I was talking about weekly sofware totals. The hardware wasn't even up when I made that comment. Sorry for the late reply. Got the flu for the first time in 5 years. Been fun. Ha. But jeeeeez. Those PS4 hardware numbers. For a week in late May? Holy flurking schnidt!