oh, Im actually suprised that there is very little lit fanboyism on this thread so far, since it is such a hot and tragically debated topic on most networking sites, well, you have missed alot, for you and anyone like you who is new to the whole 'Battlefield' series, it's quite different to Call of Duty, it pretty much goes back to Battlefield 2, which of course, as you can tell is not the first in the series lol, this was the first game to take shooters into the modern age, until then they were stuck on World War II with the exception of Counterstrike, which in its own way was a tremendous trailblazer, Battlefield uses a variety of weapons and infantry based combat like CoD, however, unlike CoD Battlefield also features a variety of Air, Sea and land vehicles including APC's Tanks, Blackhawks and Fighter jets such as the F-35. its much more intense than CoD and the maps are tremendously larger than a CoD map, its a classed based shooter with abilities assighned to each class, Such as the ability to revive people with the medic (Rifleman Class in Battlefiled 3). The claim that Battlefield 3 will 'revolutioize' the FPS genre is a little exagerated, however many abilities and game mechanics will be added to the game, such as further development in Geo Modelling and realistic dammage, as you say, and the ability to drag fallen teammates into cover so as to revive them and a Suppresive fire system for Light Machine Guns that will alter the accuracy of the hostiles in your cone of fire in coordination of a sustained stream of shots. who do you think is going to win, well that all comes down to your opinion.
If you want a fast paced, action packed shooter, based on thinking on your feet and being able to 'lone wolf' your way through kills and objectives. Pick Modern Warfare 3. despite it being a copy and paste, the game shoot feature an Improved MW2 multiplayer which should be considerabley more balanced, whilst still blending in with the modern FPS combat we all know and love. So long as activision doesn't screw the fans over, the game should still have alot of gameplay value. That is your casual FPS gaming society and extremly competative players.
If you want a game with Tactical Skill, teamwork and Heart Poundingly Intense firefights that couple vehicle warfare and objective based combat whilst providing an immersive atmosphere of depth choose Battlefield 3. Battlefield 3 brings alot to the game and orientates itself with the more frequent gamer, whilst still catering for the casual gamer as long as they are prepared to be on their toes and think tactical. The Campaign will be alot like MW3's and should feature location in the middle east and even rumored to feature european locations in the story. Combat zones such as Europe, The Middle East and Even north America will be recreated for the multiplayer featuring real time epic distruction with the new and improved frosbite 2.0 engine, Thats Right! Grab your T-90 Tank and scream Ride of the Valkarie! We are going hot in paris and that Effiel tower is going down! XD Battlefield will be fun and will require much skill and dedication to master both infantry and vehicle combat - truly it will provide an immersive experience, dont expect to have a quick 10 Min game like CoD though, expect to sit through a 20 Min + match, biting your finger nails the whole way through.
In all both games should be good and will feature polished and overall fun gameplay. Which one you prefer depends on how you like your combat, lightheated quick and fun, or strongly intense and immersive. Of course, a smart gamer with a bit of money will buy both, mixing these two very different games. If we can get over are 'fanboyism' we can see a future of great gaming with many prosperous hours of FPS ahead. Don't expect genre revolutionising mechanics though, if you want that go play half life, lol, happy gaming
There you have it