Actually if that were the case, the game wouldve only sold around 4M. Thank the heavens for Xbox and PC for the added 6m sales.
Ok, wait, so we know that it sold aroud 2M on pc, so you think monhun sold 4M o xbox!? You realy think xbox and ps numbers are similar? PS sold 3M or more on japan alone dude, if we have 8M console copies PS most likely got 6-7M of those sales.
Prediction: In 5 years Nintendo will Lauch a "Core Mario game" very similar to Astro Bot. That said, many will Ignore Astro Bot existence and say Nintendo created this concept.