I meant the movie was made almost twenty years after the end of Z. Toryiama didn't have this on mind obviously.Lol what? It's obviously canon, also two decades? Where are you getting your information from man? It was made approximately 5 years from the end of Z. Lol he wasn't trying at all, he was letting Uub go all out, that why he was taunting him. So he could see how strong Uub was. I mean he didn't even power up during the battle lol
Oh and also the movie took place years before the End of Z, not 5 years after the End of Z. It's obviously not canon.
Goku was using nearly all of his effort in that fight. It's obvious. He outright stated he'd need 100% of his power in this fight.