well, mw2 has some realistic features to it. like when u jump. u cant jump the same height continuously and u need energy. i like realistic becuz it SHUD b balanced. without realism, there is no balance ;D cept skill will b tested
mw2 allows you to strafe and run sideways, thats not real life.
correction. u cant run sideways. when u push shift while going forward, u will run, when yer hand go off the W button, u stop running. u cant run sideways. anyways, its a game. it can never be truly realistic -.-