Surely by now you people have figured it out.
Unless you're playing Counter Strike (1.6, there is no Source) on Dust only 8 v 8 deagles, knives and armour only then you're a complete, utter, pathetic and immature noob.
You're not even a noob, you're a nub, you're not even worth four letters nub, QQ moar and get back to your unbalanced nubbishness nub...
... and anyone that plants the bomb is even nubbier.
Look, Modern warfare 2 is a made for Xbox Live shooter. It's designed to let everyone jump in and kill shit, it's not fantastically well balanced but it's not unplayable (well, not completely unplayable). Everyone who picks it can have a go and come away having been rewarded in some way, don't focus on the details too much.