User blog comment:Staw-Hat Luffy/How strong is Z?/@comment-99.73.79.229-20121214014149/@comment-99.73.79.229-20121215184237

Easy, he was known as the greatest swordsman man at the time, the scar was givin by Mihawk after a huge epic battle. He only ran from shanks because he was afraid the entire island would be destroyed, you see his ego against shanks. Plus he was known as the king of bandits, making him almost as strong, or on par with roger.