Jiren is power incarnate, but Roshi? He’s martial arts mastery in human form. Millennia of training can teach you things no amount of raw power can. Roshi’s control, technique, and cunning could exploit flaws in Jiren’s more rigid, straightforward fighting style. Remember when Roshi dodged attacks without thinking, relying on instinct? Even Whis was impressed. That moment arguably laid the groundwork for Ultra Instinct—and Roshi achieved that level of calm without godly ki. If potential were power, Roshi’s would be galaxy-sized.In a narrative sense, Dragon Ball loves an underdog. Time and again, characters “weaker” on paper land the critical blow through heart, purpose, and strategy. Roshi’s sheer force of will—and refusal to let evil win—could unlock hidden strength in a do-or-die moment. Let’s not forget—Roshi held his own against Jiren’s speed and energy without being erased instantly. In Dragon Ball Super, his ability to dodge and stall much more powerful opponents hinted at an X-factor beyond standard power levels.