Metal Gear Solid 4: Guns of the Patriots for PlayStation 3 Reviews by Gamers

The Metal Gear franchise, even back from its days on MSX2 days has been about originality, not aping its contemporaries for popularity. Its a storytelling device, told through a medium much more interactive and powerful than film. In my opinion, its very fun to play and experience in many different ways. The octocamo was a brilliant touch to the stealth portions of the game in particular.
So yes, if you are looking to mow down fools without discretion, then COD is a great experience. (and there is nothing wrong with that in of itself) But do not play MGS4 thinking it will be a variation of any FPS you're familiar with. MGS takes time and patience. Its hilarious the amount of poor reviews this game received, simply because renters expected something else and were disappointed. This is an admonition that this is a finesse game with a lot of depth and substance, but not in the places normally attributed to the action genre.
In short, don't buy a prize-winning purebred clydesdale and expect it to fetch a ball for you. This is a game of integrity and strength more than a short thrill ride-- though the thrills never come up short, simply in a different way.