Its the technical aspect of BF4 that is unfortunately broken. The single player game while rubbish works well enough as do all the weapons and such. But it was the netcode and the hit registration and things like explosion rocking of the screen that was broken in the game and needed fixing. Took pitchforks and complaints from a lot of pro gamers before they finally decided to actually do something about it. So if its that DICE that is consulting with Hardline on technical issues there is a problem, because DICE seems to have lost all its talent, presumably to the Frostbite engine development.