This is a blog post explaining how broly is around universal to high universal.
Statements.[]
Broly already had destroyed 1/4th of the universe as movie began....as RESTRAINED super saiyan.King kai feared it would destroy earth, and then the northern galaxy. We then have a number of statements saying he is universal. Mind you, there are so many statements it is not hyperbole.
Gallery.[]
Conclusion.[]
Due to many statements which cannot be hyperbole, Broly is around universal.