First off, if you cannot hold a discussion, don't bother saying anything at all. (Hint: anything off-topic / insults / anyone who is too weak-minded to control their emotions and have a logical discussion about something they disagree with, don't belong here.)
Explosives - grenades / RPG / C4 and even mines are fine, they deal a lot of damage but they're not that easy to use, that's why so little people use them. On the other hand, pretty much everyone uses SMAW / grenade launcher, in vanilla CoD4, the grenade launchers aren't nearly as powerful and it's hard to kill someone who has the flak jacket perk with them, but in the mod, you just look at the general area and if the enemy is within a 10 feet radius, they're dead doesn't matter what perks you have, not only that, but the GL has 3 rounds. SMAW is even easier to hit with.
Also, it'd be nice if explosives were blocked from using at the first 15 seconds of a round, to prevent the grenade spam.
Guns - most of the guns in the mod are fully-auto while not having any compromise on accuracy or damage, the Saritch for example, is almost as accurate as the M16 which is burst fire and much weaker, even sub-machine guns are easy to kill with at long range and in close range you just hold mouse1 until your enemy is dead.
And no, the game is not realistic in any way, it never was and it shouldn't be, that's no fun.