Summary: This game is awesome! As a hardcore gamer who plays EVERYTHING I enjoyed this game. However if you are getting a next-gem platform soon, I would highly recommend to wait till you have it to get this game. Good game but a lazy port. Minor multiplayer glitches such as your gun not appearing for the first 20 seconds of the match and buggy textures. For the graphical power of the PS3 I would have expected something better looking.
Summary: I own both the PS3 and PS4 versions, and while the graphic disparity is huge, that is only to be expected. The PS3 version is perfectly serviceable in its own right. The campaign is pretty much standard fare, and it really doesn't feel like a chore to go through the motions. The action is vivid and the voice acting is pretty strong, if not a bit hammy (particularly from Spacey). As for the multiplayer gameplay, the Exo suit of course changes the dynamic substantially.
Summary: No big changes here. There are some new Exo features that are new but the play is the same ol game. There isn't a good 4th game without buying DLC. When you do spend the money you get a version of Zombies. $15 more just to get more hord play zombies, which isn't as fun as survival at Town. I prefer Ghost but this is a kick in the pants too, they are just squeezing more money without increasing the value, typical.
Summary: I don't understand some of these low ratings. I have it for the ps3 and this is by far the best call of duty to date. Graffics on the ps3 are great, I can only imagine how much better on ps4. The story is great and we'll written. Kevin spacey is is a solid character. The weapons and the things you can do is fun. IMO this is a must buy. I haven't played online yet but the story mode is the best yet. It's a must buy!