if broly went super saiyan 4 wouldn't like the universe cease to exist from his shouts alone?
And he'd still be defeated through PIS
@ReiKai: Destroying all the planets in a galaxy doesn't not equate to galaxy busting, just absurd planetbusting.
So he destroyed alot of planets. He did it over time. He's a massive planetbuster, but he didn't destroy all of it at once, so he's not a galaxy buster.
For this to be true you'd have to believe that:
a) The opening sequence was a complete artistic rendition, and not at all literal. Kinda hard to believe an action sequence is a hyperbole.
b) King Kai waited around for X many days/months/years while Broly destroyed the galaxy planet by planet, until he at some arbitrary point decided enough is enough and sent Goku to investigate. Little tough to swallow since Kaio seems to be watching as the galaxy is shattered in seconds, then immediately reacts.
If both a) and b) are true then you are correct, if not then he can indeed destroy a galaxy.
Personally I think he probably destroyed about 75-90% of the so. galaxy in one go, leaving a few scattered star systems in tact.
@Kurohige: How do you know he's only a galaxy buster. Just because he destroyed a galaxy doesn't limit him to that. If you could drink tea, that doesn't mean a cup is teh heavies thing you bench-press. As a fanfic writer, I love to speculate, but this shouldn't be in the battle section...yet!
King Kai states that Bills has such great power that he will EVENTUALLY destroy the galaxy and that he is the strongest threat to ever have come so far.
To be fair they say that about almost every villain- Broly, Buu, Hatchyhyak, I think in the anime they even said something similar to that for Cell.
With the new DBZ movie and the Man of Steel movie coming out soon I fear a return of the internet's favorite battle.
Anyway there probably won't be any siginifigant change to DBZ,maybe it will shows some lightspeed feats although they will most likely stay in the range of hypersonic possibly low stellar beings.