The 3 million opening week prediction seems crazy to me.
Uncharted 3 came out on the heels of Uncharted 2 which was one of the best rated games of all times and it sold a very impressive 1.3million its opening week when the ps3 had an install base of 55.8million.
Uncharted 3 was not as well recieved as Uncharted 2 so there is no reason to believe there will be a big jump from Uncharted 3 to Uncharted 4.
As for total sales, Uncharted games have all sold very similarly to one another. There hasn't been any big leap over 3 games so it just seems silly to think its likely that the 4th game will randomly have such a massive jump. 10 million would require extremely heavy bundling. As in every single ps4 sold during the 2015 holidays needs to come with Uncharted 4.
