Historias de Cellmax

After Gohan and Piccolo defeat Cell Max, a flash of light appears. Out from the brightness comes Namek, the Namekian God. He offers Piccolo the chance to be his heir, and he accepts. Him and Gohan spar against Goku, Vegeta, & Broly. Who will win? -- This story is a one-shot. I don't own Dragon Ball Z, Dragon Ball Super, I only own the plot. Also don't own cover, found off Google.