I think we should congratulate Uncharted for the feat!
To those who say userbase isn't a big factor though... imagine X1 would be 40m and PS4 at 20m... I'm about sure 1 in 5 X1 owner would still own H5 relusting in about 8m while 1 in 8 PS4 owner would be getting U4 resulting in 2.8m... this is grasping at straws I know and we wouldn't know unless we enter an alternate universe but imo it shows that userbase does matter.
I would congratulate U4 when they have done better than other Uncharted though, same as for Halo.








