User blog comment:Mr.DannyHancock/Luffy the Marine/@comment-3119203-20110919021851

he would be like Smoker: strong beyond his rank. I agree with the other comments, Luffy would not have obtained some of the power he would have, but he would have gotten a different kind of strength. He might have even learned haki earlier from his grandpa, and developed different gears, or the same gears earlier