>>718758323
2 had a much bigger and more diverse world, that made a huge difference. Having big mountains, swamplands, a large city like Saint Denis, it adds a lot of fun to the exploration.
It also had found a great way to fill in that world: Hunting. Looking for rare animals and killing them in the correct way is highly satisfying.
1's world was smaller, mostly desert along with some green plains and mountains towards the end of the game, and the hunting was a bit too minimal to be satisfactory.
Graphics are also a big deal to me if you're talking about shit like realistic weather systems and wild men hiding in the swampland fog.