Is call of duty modern warfare supposed to be rated teen?

it should be rated T because mostly all the other Call of Duty a T

Untrue you must play a Nintendo DS

The real call of duty Modern Warfare series games are made only for the Xbox 360 PS3 and PS3 and are M rated. Other systems version of the game just don't have the equipment to run the games and the features are reduced to take in the Nintendo systems lack of capability