I'd say you're factually wrong and that no legitimate gamer/person with taste in video games could deny that Call of Duty 4 was an excellent first person shooter that managed an incredible campaign on top of defining the genre of FPS multiplayer for the rest of time.

Alright then. Since the modern warfare series started... It's been too easy and lacked diversity since and I hope advanced warfare redefines The franchise. I think CoD should do what halo does and release 1 game every two-three years, I can still see the potential in CoD but every single one I've played has felt like a rushed game. World at war had good zombies though.

That I can agree with. And I'd even say that even though Ghosts was a failure by most accounts, extinction mode is amazingly fun and something I hope they hold onto in some way. Heck, it would be great if zombies took a few notes from extinction.