Neither are particularly all that interesting, but I find it crazy that Blunt Weapons have more depth than Katanas. With Blunt Weapons, you have the decision to Wrecking Ball, Quake, or just Left-click them to death. With Katanas, it's just left-clicking and Finisher. If anything, Blunt Weapons should be the unga-bunga no brain weapon, but you have more choices to make with it than the honorable Japanese blade of skill.