R1: Blackbeard. Blackbeard set in motion Marineford and became a Yonko. Doflamingo thought it was a good idea to lock himself in an island with a bunch of people he had tried to kill. And an Admiral who he thought he could somehow take out.
R2: Blackbeard. He’s a pirate’s pirate. He’s a proper dark Luffy. Has his setbacks, is far from perfect but still ends up winning. Doflamingo was a lesser Crocodile and I wasn’t really impressed much by his or Law’s flashback.
R3: Blackbeard. He has the man’s dream speech, pretty much the peak One Piece panel. His fight with Ace. Plus his Marineford moments. Doffy doesn’t really have many iconic moments. His speech in Marineford? I prefer Blackbeard saying there’s no answer to justice or evil in ID. For all the length of Dressrosa there’s nothing in it that stands out as an iconic Doffy moment other than maybe Luffy stopping his foot, and I’d say Luffy was the main figure there.
R4: Blackbeard. Cause… I just like him more.