>>10961026>>10961040The trick is that the new one has more torso that the panels of the original aren't extending to cover as much. The panels reached the (fake) Skysaur hands on the original, then beneath that the remaining gap was covered by tiny dino hands. The new one reduces the panel to just where the shoulder is, rather than go down further (and make the chest more cubed).
Note this image from Seibertron is mistransformed, and the left arm has a panel flip out from the panel to lock the part into place on the torso.