Call of Duty Ghosts sold 22.6m. So unless destiny does really well on PS360 it will doubtfully come close.
If we are talking only PS4/XBO well you need to consider that Ghosts came out a few weeks before on PS360 than PS4/XBO due to their launch dates.
From what it appears, most Call of Duty fans are still using PS360 with over 17m sold on those two platforms. In order for Destiny to have stopped Call of Duty it would need to take serious sales from CoD Advanced warfare on all four consoles.
Considering one is SciFi with its main focus on Co-op and the other a military shooter with a main focus on competive multiplayer and both being months a part on release, they are likely to not effect each other much. If anything effects Call of Duty it would be Battlefield as they are direct competitors. Halo to a degree since they release in the same month and also have a big focus on competitive multiplayer. Also Call of Duty stops its self.
