Well they certainly are quite different games when it comes to play style though I believe they are both kind of the same thing when it comes to their respective franchises. Both are enjoyable games with the right factors but COD seems to be more of an arcade kind of shooter while BF is certainly more focused on the strategy because while in COD you could definitely Rambo your way to the top BF requires team work to propery acomplish the objective. In all honesty they decent games it just depends on what kind of shooter you want to play.
not really with all the modes bf4 offers you can stick to the rambo run and gun like cod or go team style with others.
what a few reviews have posted are basically
cod: feels good but small maps
bf4:big maps has the same feel as bf
where things seem to go to the next level for me is levolution, dynamic map damage. vehicle play
i cant touch on how cod is with dynamic map damage. but i know how it works in bf4.
in one capture point you could blow the whole bottom of the store apart.. take down 80% of the interior walls, drop metal gates and even destroy sections of them... this became so great. when in heated battles you could push them in the middle with little to no place to get cover.. without dynamic map damage this was not possible and would giv cover to anyone inside. so say they drop the gate for cover.. but you know you destroyed a section that lead to slight cover. you can come in on the backside and take out 2 people and start calling out other enemy positions.
with levolution you can/could drop small sections create ramps to areas and even use ladders to scale a building that otherwise required a elevator. this gives you roughly 4 entery points to a very hard to take high point. not to mention levolution in the cse of dropping a building.
cod has a aspect of level change but it not as involved and does not give back to the players as much.
idk to me if you stripped bf4 of levolution and dynamic maps,vehicles you would than have a cod game.
it just seems like cod has one play style.. rambo/run/gun while bf4 gives you many an option on every game type. i have only played 3 bf4 game types thus far.