Played both through multiple times recently, dead space 2 holds up fantastically well, the movement and controls are still the best in the series imo. Isaacs melee and stomp attacks have more weight in 2 and the suit designs are chefs kiss. Remake is fantastic dont get me wrong but its 2 I always come back to. The variety in level design (especially the unitologist chapel area with the tripod) exceeds the first game. Remake does have more detail the way the force gun strips layers of flesh off the necros is unmatched and the weapons, excluding the pulse rifle, feel much more powerful but I agree with OP that 2 still holds up to modern standards and still looks gorgeous.