I haven't really followed news on what has happened on the console version, so I suppose you guys aren't clear on the PC version.

Dunno about xbox, but the PC version has tons of bugs.

For instance, using Scar+Laser gives you around 15% boost in strafe speed. If you add the Aim Enhance module, that goes up to 40%. Aka the enemy moves so fast, by the time you move left, he moves right. And with the reduced recoil, it's even worse.

On some maps, like Skyline, when orbital strike is used, there is massive lag to the point where players appear frozen to you, and you can melee them and kill them(a bit hard, though; this also applies to them, they can also kill you as much as 4-5 times one after another respawn)
Here is an example in my recent gameplay video http://www.youtube.com/watch?v=Y1fB062HkFs. Fast forward to 4:30 and you will see.

Also, using the L-tag, it also sometimes causes lag.