I'd say if anything that the trailer was made up of development footage, there's no way they would leave those 2D flat sprites for fire, smoke and other liquids in place surely.... Frostbite must be capable of better although the only other games that use it are the Battlefield games, all the Star Wars and Need For Speed - All these are fast paced action games so I guess Dead Space having the slow pacing that it has will show up any flaws in the assets like the trailer shows.
Have EA missed a beat here by choosing Frostbite, when UE4/5 are much more capable for this sort of game genre?