we have seen lots of devil fruit abilities in the series in very large range. Why do people suprise that devil fruit . Too funny. oda could give most powerful devil fruit to Luffy but did not prefer. Also , why do we act luffy has god devil fruit. Joyboy had this DF but he couldny survive anyone. During 800 years , WG rule the sea and lands . Luffy is not Joyboy. Also fights can be good with this DF. we have seen a lot of common fight that include fire , thunder , water , demon , devil during the anime and manga history. just give a chance.