Pretty sure it's confirmed somewhere that the base level kaioken technique lasts 3 seconds or so Considering goku messed up members of a race bred to fight, using kaioken (meaning he beat them in <10 seconds), and his power and speed increases drastically with each ssj ascension, he could wipe out any enemy in the Destiny universe before you could blink... People forget the fights in dbz can take seconds because they're moving so fast - dbz fights are stretched over multiple episodes but realistically everything in this episodes would happen within a minute