mw2 games are often too short, and there are much more campers there also
i played s&d with ryo and some other dudes once on terminal. i went and killed a guy, another one then killed me and then i thought 'where the f is my team?'
i spectated, and all of my team was camping in one spot. thats 4 guys with sniper rifles and 1 guy with an aug hbar... clays in the doorsteps and so on. i thought 'wow, thats why we always lose'
also iw really screwed up by making us host the games...
in cod4 you dont have so many campers, altho they exist. in cod4 your team actually is a team. you can just teamchat them to go to objective a, and they will. when you tell them that the enemy is planting, they usually respond. cod4 is more tactics-based than mw2.
theyre both good fun, but mw2 just has more cons so cod4 is better