Officially the ps4 and xbox version has sold a staggering 8.3m units in the 6+ months it's been out. However reports from steam suggest it had a good pc debut of over 2m sales. Monster Hunter has just entered the big leagues. I've no doubt it will hit 15m+ too.
So obviously there's a lot of crow to be served to those who doubted 10m but also to those who doubted the PC release would have an impact. I remember people were naming alternatives on pc that were getting popular in it's absence suggesting they would steal monster hunters thunder.
No chance. There's only 1 monster Hunter! Congrats capgods!