Assualt Rifles are absolutely useless and have ruined my favorite part of the game. I loved all the assault rifles in mw3, besides the Type-25. Some of the guns may have been OP like the ACR, Type-25, and the AK gun. (Although the recoil canceled out its unstoppable damage). In Black Ops 2 however, the ARs have no advantage. They are beaten in every category.
Firepower: What a joke. The Scar's damage is the only one I can really believe in. My accuracy is pretty much on point, I only shoot from top half of the ribs up. Fair enough accuracy with each weapon in the category and every gun has a k/d above 2.0. Back to the firepower point though. I've been watching videos on YouTube that do range, damage, spray, and so on reviews on each weapon.
Let's start with the Mtar. This might my number one AR. It has wonderful iron sights and decent damage with no annoying recoil. It is decent with range but has crap damage at far. CAN'T SHOOT THROUGH ANYTHING.
The Type 25 is a piece. The fire rate is awesome but it seems to take a lot for me to kill them. The videos I've watched have said 6 at close but on my connections its 7. This is crap though, because the connections are so inconsistent.
The SWAT is crazy. The burst is probably one of my favorite burst weapons in Cod history. Thus in this game it doesn't matter. The SMGs will swarm and out power it. If you slap the select fire on it, the chances of survival increase.
Fal is almost flawless. ALMOST. The reload is stupid and it (Depending on the connections) is inconsistent at times.
The M27 is my worst AR based on stats. Everyone says it's good with the right attachments so I try it out. It fixes one problem but causes another to arise. I hate the amount it takes to kill at long ranges. LMGers will drop you by the time you fire the required amount of rounds.
SMR is confusing too, I never get it right. The Iron Sights are so bulky and if you don't start shooting the target lower the recoil sends it straight up.
The M8A1 I hate the most. The burst is 4 rounds, which should be high in damage, takes on average 2 bursts to kill. That's 8 rounds. To much for a burst. Slap on a Select Fire and it's still numerous rounds.
The an94 is an ak47 wanna be. Dumbass looking iron sights. Sporadic recoil. Damage isn't as good as it should be.
Range isn't a factor in this game. Spawn flips, small maps, SMGs/LMGs ruin the range. You can take a PDW57 silenced, play on long open range maps (Carrier/Turbine) and still out gun a AR. Don't try to say ya can't. If I can, you can.
Fire power, as I meant to talk about before I trailed off a little bit, is terrible. Today's CoD games are horribly designed in online connection. We all have experienced the famous lag comp or some type of lag. Today it seems that the only way to win a gun battle is to have a lag advantage. My ARs are super inconsistent, some games I kill three guys in one mag, other times I only kill one with half of a mag. Even if I shoot him/them in the same locations, but when it comes to shooting through objects. . . Wow. Dry wall and glass are the weakest things in an map environment to a bullet. Why can't my bullets penetrate them? Must I really use FMJ? If it was concrete or a full sized mini van body frame sure.
Reloads are sometimes just dumb. I understand it's cool to add a little flash but they take a little long. Fast mag is good but a waste of a better attachment.
The iron sights are pretty decent until the recoil comes in. They really ruin the peripheral of the shooter when engaging. They should be simple like the SMGs.
These are just some off of the head things I dislike about the ARs I can think of at this time. They defiantly can use some work and should be evened out with the other weapons.