The differences I have found between Rebels and Battlefront:
The air hoses. In rebels, the hoses are connected to the jetpack. In Battlefront, they are connected to the chestbox, unique only to the battlefront trooper.
The armor. The helmet in battlefront is from Return of the Jedi. The one from rebels is the animated one, BUT, it has a little greeble on the chin. The lens are also one piece. The frown appears to be much thinner, painted white.
In rebels, there also appears to be "grunts" jump troopers without the orange shoulder armor. These are not in battlefront.