Here's a thing: a cutscene from Call of Duty: Ghosts appears to exactly replicate the motion capture and camera angles (though not the assets and textures) of part of the ending sequence from Call of Duty: Modern Warfare 2.
This has been branded "recycling" by certain subtlety-averse segments of the internet. I think it's a calculated and fairly obvious homage, myself, which reflects the fact that Ghosts is inspired by but not a direct offshoot of the Modern Warfare storyline. Have a look, and let us know your thoughts.
Conclusions as to the above notwithstanding, it seems indisputable that Ghosts leans rather too heavily on the franchise formula in terms of the gunplay and campaign scripting. Aoife's Call of Duty Xbox 360 review has more.