User blog comment:Swimswimfruit/Zoro's eye and katana/@comment-3279487-20120827180342

You just picked a bad picture: As you can see they are the same swords. In the anime they are the also same. http://images3.wikia.nocookie.net/__cb20120617155155/onepiece/it/images/f/f0/Shusui_dopo.jpg