Order and Chaos! – how the moderator shapes the Ultimate Werewolf experience

My first foray into board games outside of classic or mass market games (such as Chess or Monopoly(1933), respectively) was with Battlestar Galactica: The Board Game (2008), so I quite enjoy a good social deduction game. Last week I had my first experience with Ultimate Werewolf (2008): I played two sessions, with completely different groups, and different moderators. The moderators had very different approaches in running their games, and I would like to discuss how this affected the experience.