Another thing that makes Demon's Souls better is the unique World Tendency mechanic where lots of things in the game would be accessible only under certain circumstances. It was difficult to understand but that just made it even more awesome in my opinion.
It was a really unique and fantastic feature that I missed not only in Dark Souls (it retained a similar principle but to a much lesser extent and not dependent on the multiplayer situation) but wish other games would have copied by now.







