Suggested by Random King Ghidorah is one of the most powerful Kaiju in the Tohoverse. He can shatter buildings with a single blast and has actually had the edge against Godzilla in some of their confrontations. That being said, I think Broly has definitely got the edge here easy. His raw power was enough to overcome both Goku and Vegeta. He also has near limitless speed which will make evading Ghidorah quite easy. Broly wins.