Here, watch this.It is very enlightening:

https://www.youtube.com/watch?v=o1-vyVPD6mY

And if you say that XC 2 and XC X are similar games, then you clearly havent play either of them, probably much like the rest of both libraries.

And for games not covered in the video: Octopath traveler, which is anything like any console have, Mario Tennis Aces which is a completely different beast compared to Ultra Smash, Labo (for better or for worse), Super Mario Party, which is a return to form, Pokemon Lets go (again, for better or for worse), and so on.

Xenoblade X and Xenoblade 2 are very different. Not to mention from that list: Kirby games are different, Mario Maker and Kingdom Battle are way different, Two main Mario games are different, Splatoon 2 is a sequel. Oh and BotW came out at the same time, so that's a trick.

Xenoblade X and Xenoblade 2 are missing, also two very similar games. And please don't tell me 1 or 2 games can make such a big difference in sales, because that is of course BS. 

Also this image compares games from the entire Wii U lifespan with some games the Switch wich received within ~ 1.5 years.

Edit: And of course it ignores a ton of other games on both sides.

The big question is "why does the Switch sell so much better than the Wii U when their libraries are so similar"?  And the main answer is that if you look at the sales curves, the Switch actually sells very similarly to the 3DS.  That means that right now Switch is selling like a handheld, because mostly people in the handheld market are buying it.  (Switch is actually selling a little better than the 3DS for a variety of smallish reasons.)  The one main reason the Switch is selling though is that it is mostly selling to the handheld market.

http://www.vgchartz.com/article/271115/switch-vs-3dsvgchartz-gap-chartsnovember-2017-update/

Look at the second chart.  You'll see the shape of the curves is quite similar.

Not really strange when more than half of the Switch library was already completed before the Switch came out. 

Not really strange when more than half of the Switch library was already completed before the Switch came out. 

That comparison is NS' first holiday to 3DS twilight year performance it doesn't actually show NS selling as a handheld, you'll know when it starts selling as a handheld because the performance in Japan will jump up significantly right now the NS has just carved out a section of both the home and portable markets, the full portable market will begin migrating over when the price point begins matching that of handhelds.

I have a feeling a price cut won't happen this year but next as the second Pokemon game arrives.

Read the last paragraph of the article.

"The 3DS launched in February 2011 (however, 3DS sales have been aligned to March 2011, since it only launched at the end of February in Japan), while the Nintendo Switch launched worldwide in March 2017. The Switch has sold 8.86 million units, while the 3DS sold 7.72 million units during the same timeframe."

It is launches aligned.  The two sales curves are very similar.