They include players from the Americas, Europe and Oceania alike, Japan is excluded. Check out the Miiverse community.

And, I don't know, I think the great majority of players should be connected, only a tiny percentage nowadays shouldn't.

That's a Tyrant you can fight more than once. The first Cinicula is unique and never appears again, or at least I'm aware of that. 

I dont think thats true, I think alot of people play offline, simply because either the internet signal dosent reach the console(The pc stays somewhere else), or simply because they dont have internet.Believe me, thats more common than you think.I wont say its a giant number, but I think its a significant number to consider.Plus, we dont know when the person took that screenshot, so the number may be irrelevant now, and it dosent take into account the players that didnt reach thee monster yet.And I also think that there are people that bought the gift for christmas and still havent played it yet(or is receiving it for christmas).There are many variables, and the reason i assume that number is not correct, or at least is outdated, is that we know for sure that in France it sold 40K plus 10K from UK, and germany also sold at least that much(vgchartz state that it sold 33k for the first 2 days).With digitals and rest of europe, we can assume pretty safely the game sold much more than 100k in Europe alone.So i find it hard that the game sold a bit more than 140k worldwide.If I had to guess, that number is outdated, or many are playing offline, or bought it but didnt play it yet

Well something is wrong with that counter cause those numbers seem impossibly low.  Not improbable, but impossible.  France, Germany, and the UK account for 80k already from official numbers and tracker estimates.  Factoring in all those other regions that leaves like 40k or so for XCX in the US which seems completely and utterly ridiculous given that it has faired pretty good on various charts.  And given this is the Holidays, that accounts for more than normal. That plus the shere massive size of the US relative to the other regions and 40 to 50k sold right now in the US seems literally, factually impossible.

So either the tracker is off significantly (I could see that being very possible) or there's a very large number not contributing to it for some reason, be it playing offline intentionally (this is the sequel to a purely singleplayer experience, I could see many doing this), offline due to disconnections happening a lot, not playing it yet due to busy schedules or other games, the copy is sitting under a Christmas tree.  And this is an open world, a lot of people are probably faffing about in the open world and not fighting the thing.

In my case I spent 5 hours until I reach the first cunícula, is not something you have to play 15 minutes after you start the game , and when I got there, my server was fallen and I was playing offline even with the console conected to internet. So I wonder, how many people has started the game just to see how it feels and all that, but hasn't reach that cunicula yet? Is the kind of game you need take seriously and waste a lot of time so a lot of people waits until the right moment to play intensively. Also I wonder how many people was offline like me on that fight and of course how many people has it under a tree waiting for Xmas.

I dont think those statistic are that usefull to know sales.