Its as of now in open beta its a mod of bf4. But once the game gets launched, its not going to be a mod. Have you even played the beta? Theres going to be way more features, different gameplay experience than bf4 in the beta alone since now in choppers you have to worry about all infantry shooting at you because the bfbc2 vietnam paper helis are back along with the cars not being bullet proof. No need to worry about MAA and ARMs, ziplines are neat for transportation, car driving is so so so much better, and in all, its just going to be an infantry focused battlefield like the bad company series was.