It seems people are arguing whether those are double dippers or not, because "if they are, it doesnt count" or sth. like that.
No one ever said something like that. And double dippers would obviously count (???).
We know for sure that consoles SKUs amount to 8.3M minimum, that's a fact. And then, you can conclude that the PC SKU is at 1.5M minimum or so (because the 8.3M figure was from June 30th, so you can add 100-200k on consoles).
The Steam 2M+ figure comes from SteamSpy and goes against this PR right here (we would have 10.5M+ total right now). It doesn't say PC isn't at least at 2M, we don't know, but i think they would have said 10.5M+ if it would have passed that mark, it's an opinion. We honestly don't know, nor the guys pretending it must have passed 2M like an official word.
It's not done in order to downplay any figures. I can talk about me, i think PC SKU will pass 4M in his lifetime easily and should amount to 25/30% of the total in the end. Anyone trying to downplay those overall numbers or even the almost unprecedented (for a japanese game) Steam figure (1.5M to 2.1M i would say) is dishonest and trying to shit on the game.