Switch about 1.7-1.8m
Xbox 0.9m
PS4 0.8m
According to Magic Pork in ERA.

Really anticlimatic month.  I overestimated EVERYTHING.

If Switch is Gen 8 its the best month for the Gen 8.
If its Gen 9 WE have to See If the ps5 and nextbox will sell more than 1.8 Mill.
Gen 9 1.8mill is still good.

YTD
NSW: 5640K
PS4: 5330K
XB1: 4340K

So Switch didn't crack 2 mil saddly.

But it did outsell PS4+Xbone it seems. Narrowly. Also, Switch is apparently the best selling console in the US for 2018, so quite a comeback there. Strong performance overall.

Now we wait for Nintendo's shipped report to get a good perspective on overall holiday performance globally on that end.

PS4 and Xbone though...ouch. guess it was inevitable.

So, Switch > PS4 & XBO combined.
Hot Damn, that's beasting. Though, I am slightly disappointed that it didn't crack 2 million.

Adding together the weeks that VGC has done so far for December:
By the week ending December 22nd these are the U.S. numbers on the site:
PS4 - 646,709
XBO - 903,791
NS - 1,188,335

Is December 4 weeks or 5 weeks of data?

Always 5

Thank you. 

Even with that extra week, still looks like the PS4 is slightly undertracked; XBO is way overtracked; NS is way undertracked.

Switch has passed 10 million in the US.

The PS4 managed to finish slightly up YoY in U.S. from 5304k to 5330k, so the incredible 1st party support this year + RDR2 made a difference in one region at least.