Before Goku could defeat Vegeta (Frieza ... Kid Buu) he had to defeat Nappa.
And Nappa sucks. Despite his hugeness he’s cocky sloppy and weak. But in the logic of Dragon Ball Z the process of battle and striving to win makes a combatant stronger. Nappa was weak but before Goku fought Nappa he was little stronger. Goku achieves near infinite power by barely beating harder and harder opponents. Maybe Alton Robinson can do the same.
Right now Robinson’s mostly scrub-busting. Robinson’s that griefer who picks off underleveled players. He notched three against backups.