Though MAG's graphics aren't that great, it's the amount of players and the rank system that triumph.
THE GOOD:
-Up to 256 players
-A rank system that judges you on how you play, not how long you play *COUGHmw2COUGH*
-No lag
-Fun game modes
-Good opening cinematic
-Great squad system
-Well designed maps
-Cool 3D in-game map
-Large amount of weapons to choose from
-Large amounts of customization, though not too large
THE BAD:
-No offline play
-Graphics aren't the best
-Need to be level 10 in order to play with 256 players online
-Server maintenance sometimes gets in the way
-Can't have more than one character
Overall, buy this game.