Its completly the same, except in maybe Black Ops, but the diffrence is very small...

It's really not, MW2 is far less balanced than CoD4, the excessive customization and rewards of later CoDs have made the process of levelling and unlocking far more unsatisying. WaW would have been perfect if it wasn't for the dogs, imho.

I had a lot of fun playing MW2 multiplayer but BO is much better. The improvements made makes for a much more balanced game. No more killstreak kills counting towards the next killstreak, no more endless supply of claymores if you used the scavenger perk, and my favorite by far, no more little pricks doing that bullshit with the tactical insertion. I used to get so distracted hunting those A-holes down whenever they were in a game. I also like the weapons and the playercard customization, get this, you can make a dick if you want to and, he-he, have it on your weapon. I'm just making a joke of that last part but it's true you can do that. I've also noticed that the audio is punchier in BO.

Then there is combat training, bots, zombies, wager matches, file share and so on. It just offers much more. I'm not much into campaigns so I can't comment there. Also, I'm not a PS3 owner but my points still apply either way.

Black Ops is a better game than MW2. The single player is much better, the online is bustling and the zombie mode is great fun in co-op. It's more expensive though.

But the gameplay itself isnt changed much(easy aim, no recoil, innaccurate snipers, god granade physics), and i assumed you were talking about single player

No, the basics haven't changed much, it's still an arcade shooter. But since CoD4 flashiness and cool upgrades seemed prioritized over balance, frustration, and satisfaction.

Get Call of Duty 4

Hasn't the game kind of aged now? My assumption was that MW2 and Blops would have at least looked better.

Also not too attracted to 4 because of the lack of trophies.

4 is awesome. First 360 game I got and I was just Wowed by it, probably the first modern shooter that I almost made a mess in my pants for. In terms of gameplay I'd say it's the most balanced, followed closely by Black Ops, I'd recommend wholeheartedly that you skip MW2, unless you want to know the story from COD4.

Graphically the difference isn't so big. One of the best campaigns in FPS history and waay above any other COD.

Great multiplayer maps too though the only annoying thing is that you can extend your killstreak with helicopters/air strikes etc.