2 for 1 (spiderman + miles morales), its still another copy of Spiderman sold (even if it comes bundled with Miles Morales).

You can pay for MM only or buy the ultimate to get SM, so clearly the motivation to pay extra is to have the original, so in a way the sales should be accounted for. But yep it would create a lot of confusion.

Heck yes. GOW! Can't wait for Ragnarok boy.

Sony's 1st party are now above nearly every third party offering on Playstation and are nearing Nintendo levels. That's unprecedented, since Playstation also has the bulk of third party sales. We haven't seen a synergy like this since Nintendo in the NES/SNES days. 20M + : TLOU, UC, GOW, SM10M+ : Horizon, Ghost, GT, 5-10M : RC, DS, DG, Demons Souls

Don't do that, you are going to attract a lot of heat from "don't dare compare PS exclusives to Nintendo, Animal Crossing done 20M while GoT done 5M"

Gratulation !!!!Together with Ghost of Tsushima, The Last of Us 2, Persona 5, Uncharted 4 and some other Games THE BEST in den last 10 Years!

The fact that those other games were on previous gen and so much time have passed makes the last official numbers probably very close to current LTD. So yep almost all the sales in between were for GoW 2018, that is why it should be very near 20M (sure some can be attributed to promotional deals or bundles but how many games got so much from this without being games that people really wanted to buy?)

GOTG deserves insane sales. Even thought its being beat by a couple previous gen games ? aka BoTW, GTA5 and Minecraft

I mean, it sounds like you're mocking that reasoning but .... that's completely true. They aren't at Nintendo level. They'd be at or even above Nintendo level if we were comparing it to the Wii era (if we weren't including separately sold Wii series games, which is kind of unfair, a product is a product but oh well). But they aren't at the Switch's level, it's not even deniable really, think even NPD's analysts have said there's no system that has sold exclusives like the Switch. Animal Crossing is a good example, to be fair, as that will probably do 30M in a year. A year. 

Breath of the Wild is not previous gen. Let's not do this. 

Well if you choose to see stuff that way, you also have to admit that compared to Microsoft and Sony games, Nintendo games face much less competition from third parties. It doesn't make Nintendo games sell not look impressive but it should be taken into account.