User blog comment:The Koromo/Crossover Battles We'd Like to See but Will Never Happen Outside of Fanon/@comment-1454981-20121231042746/@comment-1454981-20130102184850

luffy and ulq. speed right now are equal but luffy is NOT an island buster no way in hell. look what ulq. did to las noches and las noches is much larger than most islands in OP. ulq.'s destructive abilities plus his speed and regenerative abilities are way too much for luffy. luffy would put up a great fight because he is luffy but ulq. would outlast him with his hierro,cero,speed,and destructiveness.