Pretty sure cod still gets that many logging on for the previous title in addition to the current title every year. Except for ghosts. Not as easy to tell since they removed the players online and in what playlist now. From the numbers I've seen, destiny is losing more people than it gains and many of the users they include in their numbers to look good are people that started the game and quit after an hour. The percentage of trophies unlocked on ps4 also say a lot.

Destiny had about the same amount of players with all the new fps that came out. It released in the same year as titanfall

That's definitely not true. Destiny was hemorrhaging players so they created the refer a friend to have us swindle more people to wasting money. Even then people still stop playing almost immediately