I can't find any reliable reference points for console sales in 2017. VGC's estimates for 2017 are contradicted by the article's statement that shy of 2.5m in 2018 constitutes growth over 2017; VGC has 2017 above 3.1m. Another problem is that game journalism is iffy, so it can't be ruled out that the article's comparison between 2017 and 2018 only concerns PS4, XB1 and Switch while the 3DS is ignored despite wording that should include it; nevermind that "official hardware numbers have yet to come in", so who knows how accurate the article is in regards to hardware sales to begin with.
In any case, there's too much guesswork involved to discern the sales of the PS4, XB1, Switch and 3DS in 2018.
I don't think the article omitted 3DS sales being that it was mentioned when looking at software tracking.
And does VGC has numbers specifically for the UK or doesn't it just group it in to the EU? These numbers are for the UK only.
GIbiz has always been a fairly reliable source for UK sales "news". And there isnt much to suest that at the very least their winners order is wrong. Also they were very specific about the NS being up by 20% YOY and sales for the year bein over 2.5M consoles. That goes both ways, its either they know something we don't or they just pulled those numbers outta their ass.