Auto-spamming with the AK would 90% of the time result in a headshot so long as you were aiming down and on the right side of the target from your perspective. Still very, very abusable. But since they updated the game and the AK has 100% perfect accuracy on the first two shots, you can run around all day popping people in the head with little to no effort thus making auto spamming something that is only done in a panic. With a console-modified crosshair size, the AK is right up there with the AWP and auto-snipers now.

But I digress.

As for people dying from those lucky headshots, the only thing I can tell you is that if you're trying to fight back with the DMR, that's what is getting you killed (at close range). I always have a plasma pistol or some other close range weapon on me, and the plasma pistol is readily available since everyone overlooks it despite its apparentstatus as a power weapon. DMR spammer at close range? No problem, green-beam his ass or send him straight to hell with a grenade and burst of fire. Or, you could throw a grenade and finish him off with a single DMR (or pistol) shot to the head if you must use the DMR up close. Mid-range? DMR will kill faster if you place five shots then if he wastes two magazines spamming. If he's hitting you consistently while spamming at range, then it isn't luck any more, it's skill. I've never seen a DMR shot veer off centre more than twice the reticle diameter, and that is quite controllable. I had no problem dominating with the DMR during the beta and release, and I am not getting killed in bullshit ways by DMR spammers, beta and release.

Honestly, just because you can't get a regular 25:1 k/d ratio doesn't mean the game is borked.