Yeah Goku did find a way to win, but by a punch of power that was not even his own energy. I admitt, Goku was owned against Broly. If Vegeta, Trunks, Gohan, and Piccolo were to not have given their energy to Goku, he would have died. Now I dont see Superman finding a way to win. There is no one around to give him energy to defeat Broly. This battle is ONLY between Broly and Superman.
Yeah I like good prevailing in the end, but sometimes even good, meets its match...