User blog comment:Ricizubi/It will be Shirahoshi, if this doesn't convince you even one bit that I give up/@comment-3986064-20110520193100/@comment-3387274-20110523053604

"even luffy would have a hard time with 600"

I suggest you reread Enies Lobby, remembering that this was before Luffy's abilities went exponential during the timeskip.