This is a tribute to One Piece Strong World. While Luffy definitely took a lot of losses here, I would still make the case that he looked good as a character. He went all in to try and save Nami from Shiki and just kept getting up until it happened. While Shiki was definitely stronger than Luffy here, if they were to have a rematch right now there would be no contest. He just wouldn’t be able to keep up with Luffy’s speed or haki abilities. It would be game over for him. Luffy wins.