shuts*
to be honest.. ive beaten the game, and played some muliplayer:
heres what i think:
Graphics: The graphics are alot nicer, more realistic in some points ,butin some points they seem a little odd or different (smoke, etc.) but the faces of people and the overall environment make for excellent gameplay
Weapons: The weapons havent changed much, they still have some from MW2 along with new ones (tomahawk, etc.) They are very well done and are very nice, nearly identical to their real-life weapon
Difficulty:The difficulty of the campaign is tough. It takes alot more thinking, alot more reflexes, and overall, knowing how to fight... If you arent great at many Games, id suggest going regula, then changing correspondingly
Campaign: The campaign, in my opinion, is much better. Its a very slow beginning, and doesnt really catch onto you, but after half-way through, the gameplay, storyline, and everything gets better. theve even added new vehicles, like them motorcycle, drivingthe car at the beginning, and Using the helicopter in the end (SPOILER)
Multiplayer: The multiplayer downgraded. The gameplay there isnt that great, and it is quite laggy, but its still fun if you are a CoD fan
Zombies: Last but not least, The zombie mod... The Nazi Zombies from World at was was fun, but this i think they made it better. much better with 2+ people, and can really help you in the future when you are in an apocalypse yourself