I was way off on the matchups too. Somewhere Oda is muching a carrot going, "Eh, ain't I a stinka?"
The prophecy involving Luffy is already coming to pass. Luffy never directly started anything, but he is a huge factor. If he hadn't arrived, Princess Shirahoshi would never have left the palace. If Princess Shirahoshi never left the palace, Van der Decken would never have thrown Noah at her. I think one of two things will... You know what? No. I'm done trying to predict Oda. If I say I think everyone survives he'll drown everyone just to screw with us. I'm keeping my mouth shut for their sake.