cemerian :
well games can already utilize 8 cores the likes of bf3(could be up to six not sure), bf4 crysis 2 and crysis 3 and there are a lot to come(all games using cryengine or frostbite will be able to utilize up to 8 cores if not more), so your argument is pointless
Adding to what you said.
According to DICE, BF4 can use between 90% and 95% of 8 cores. I assume it would still benefit up to 16 cores, just not as much. It's also possible that different parts of the game engine scales with CPU cores, so you might be able to increase certain qualities in game with negligible performance hit assuming you have enough cores to crunch it.