If you plan to do main story only, I’d say, go for the 2nd. However the first dragons dogma has bitterblack isles which is a giant dungeon designed to focus on pretty much nonstop action and multiple dives in, each getting further down and delivering powerful gear to help you get even further. It really helps to give you post-game stuff to do and i miss it in dd2 to the point of thinking about going back to the first one just for that part of the game