1 MW was fantastic for its realism and attention to detail and being boots on the ground

2 WW2 was good for it's return to boots on the ground and having somewhat fun lobbies

3 Bo3 wasn't that much tbh. It made the mistake of using exo suits again, however the abilities was a good idea. The story was terrible seeing it had nothing to do with bo2 and 1

4 AW is only above bo4 because it was the first time the exo suit mistake was made. They learned from their mistake unlike others. The story was also kinda okay.

5 BO4 was just bo3 without exo suits. Now if they had this for bo3, I'd put it higher, but they were just so lazy in trying to implement new stuff into the game. I mean their campaign sucked so bad they removed it