@supernova7005: Well yeah that's what am saying solo he can beat them but not easy since they can fly and that could actually give them the win.
Also sorry but I don't accept OBD nor the calcs.
@321zigzag1: Well I will say Natsu has the speed advantage on Gildarts, especially since he is missing a leg and that will help Natsu but if Gildarts tags him is over.
Well Makarov said that Jura could give a good fight to Gildarts yet Jellal could had beat Jura easily.
Jellal's full power rivals Etherion and this is pre time. It is shown when he gives Natsu the Golden Flames and Natsu says he felt exactly like he did when he ate Etherion and went Dragon Force on Zero. Also the Golden Flames take all of Jellal's magic power to produce.
Anime: Nichijou for the same reason
Video Game: Pokemon Gold