Think of a fighter whose highlight reel is all sparring knockouts versus one with wins against ranked champions. Goku has measurable feats against universe-level threats, plus instant transmission, Ultra Instinct, and energy attacks that work at range. Saitama's ceiling is a gag that the story refuses to quantify; that's funny, but it's not evidence he outscales Goku. The other side will lean on "he always wins," but that's narrative armor, not a combat feat. In a real matchup, Goku has more tools, more skill, and better demonstrated limits. That's why he wins.