Put it this way.

Nintendo stated that global sell through was ~7 million at the end of Sept.

NPD has it at ~2.3 million in the US and Media Create has it at ~1.8 million in Japan putting US+Japan total ~4.1 million at the end of Sept.

That means Switch had sold ~2.9 million outside of US/Japan at the end of Sept.

NPD has it at ~4.88 million and Media Create has 3.3 million for a total of ~8.2 million at the end of December.

If global sales are 12.3 million like this site estimates, Switch sales outside of US/Japan are ~4.1 million.

US went from 2.3 to 4.88 million

Japan went from 1.8 to 3.3 million

The rest went from 2.9 to 4.1 million

That means US & Japan sales basically went up 100% from Sept but only went up about 40% in other regions.

It just doesnt add up.

I'm sorry, but your numbers are fake as hell. Why are you even doing this? I mean, there's a lot of fake numbers on this site. What the heck is this Xenosaga sales, for example? http://www.vgchartz.com/game/4756/xenosaga-episode-i-der-wille-zur-macht/Japan/ The game didn't even released in Europe, LOL, but you have european sales at 460,000. WHAT? And there's a lot of situations like that. I used to read this site a lot, but it becomes clear that you don't have any data at all. It's like you're looking at the "crystal ball" and repeat with mistakes and fake info.

Switch sales: "Japan accounts for 25% of Switch hardware sales, Nintendo says"

Analysts expect another FY Switch sales forecast upgrade by Nintendo when it reports Oct-Dec results next month. pic.twitter.com/LWN5G3WUlH

— Takashi Mochizuki (@6d6f636869) December 28, 2017

So Switch sales are at ~13,2 million by 12/31 at very least (and shipped like 15,000,000 - soon we'll see it). But even with that info from the open sources you "counted" only 12 million. Console launched in Asia, sold more that 100K in Korea alone in december. VGC estimates doesn't make any sense :(

using the 10 million announcement  date is much better, vgcahrtz numbers make sense 100% if nintendo numbers are to be believed, even if use 3.5 million for december, the bulk of the sales come before the 25, till december 10 it should have easily sold 1 million WW in december, that leaves 2.5 million for 14 days of december, it makes perfect sense.

Your numbers makes no sense.

Dec 10-10 million

Then you go on to say 2.5 million in the 14 days between the 10th and Christmas.

Then somehow you believe 12.3m at the end of Dec is right?

because after the 24th the shopping season is over for Europe, and US.  as you can see by vgchartz numbers, even with the 24 which is a huge day included sales plummet, i'm giving very high estimates btw, i believe the numbers can't be off by more then 200k.

Your numbers makes no sense.

Dec 10-10 million

Then you go on to say 2.5 million in the 14 days between the 10th and Christmas.

Then somehow you believe 12.3m at the end of Dec is right?

because after the 24th the shopping season is over for Europe, and US.  as you can see by vgchartz numbers, even with the 24 which is a huge day included sales plummet, i'm giving very high estimates btw, i believe the numbers can't be off by more then 200k.

Your number still dont add up.

Dec 10 is over 10 million, we agree on that.

Then you say 2.5 million over the next 2 weeks.

That brings it up to 12.5 million with one week left in the year.

That final week will still be a few 100k, so ~12.8m

Then you go on to say 12.3 million sounds right.

thats if we use the highest number, remember using NPD data, 1.5 million for all of December right, we get 800-900k after the 10th from using basic estimates, since npd track from the 26 cyber monday included, we know japan is around 650k, we also know north america is nintedo best region so 600-700k for Europe the numbers are very close.