I'm not saying Luffy is a carbon copy of Roger. Both of them are their own person, but aspects of Roger's life do mirror Luffy's. Zoro is not Rayleigh's duplicate, but they serve as the right-hand men to the Pirate Kings. The strongest under their captains, Roger meeting Rayleigh was clearly meant to show how similar his start was to Luffy's. I don't think a scar and swordsmanship on their own show parallelism, but they do color the symbolism I described.
My rule with parallels is "what's the symbolism?" Without standing before Luffy in the PK throne, Law and Kid can't be Whitebeard's "parallel."
My rule with parallels is "what's the symbolism?" Without standing before Luffy in the PK throne, Law and Kid can't be Whitebeard's "parallel."