In the original Dragon Ball Z anime, fights are not balanced. Goku and his pals often end up in situations where they are outmatched by a far stronger and more experienced opponent. The series has had frequent fighting game adaptations, most recently Dragon Ball FighterZ, in which all of the characters must be balanced for the sake of fairness, even though thats not true to the story.
In Dragon Ball Z: Kakarot, Bandai Namcos upcoming single-player role-playing game, Goku will be outmatched. Hell start from the bottom and work his way up the Saiyan food chain, just like he does in the anime.
Source: N4G PC Dragon Ball Z: Kakarot Gets The Anime Right, Down To The Unbalanced Showdowns