one difficulty soulslike
playtesting is done for a single game
everyone has the same experience. talking about the game's challenge is relatively easy.
balance issues are easily addressed through patches
3 difficulty soulslike
the same budget for playtesting is split in 3
obvious try to appeal to more casul players
normal difficulty will probably be a lot easier than base game difficulty
hard difficulty will probably just be HP and damage modifiers to save money
addressing balance issues will be shit with 3 different difficulties
whenever you want to talk about the game, you can only compare your experience with people who picked the same difficulty as you