Bigmom indeed lost to Luffy as Luffy achieved his goal and got even more.....that was a loss to bigmom...but that time, these bigmom fans brought out huge headcanons to justify why it was not a loss....a loss doesn't necessarly has to do with powerlevels...Aokiji admited he lost to SHP when they got Robin back in Enies lobby....I swear if WG existed that time, we would have witnessed the same shit show....