Tainan Dalpra vs Mica Galvao — who's the real GOAT of this generation?

Both 22-26 age range. Both multiple-time IBJJF Worlds champions. Both technical to the point of being scary. Tainan: cleaner closed-guard system, more tournaments, more medals. Mica: more flair, faster ascent, the Worlds black belt at 19. Who's actually better, and who do we look back on as the defining grappler of this era?