Not Super Saiyan Blue. If we’re talking about the Movies Broly, Base Goku in DBS shitstomps. The addition of Super Saiyan Blue triggered a gradual breakdown in Dragon Ball's already shaky power scaling, where there seemed to be no discernible difference between each transformation, but this was rectified by the arrival of Ultra Instinct, which firmly put Goku onto a completely higher level.. And this may be the very reason Ultra Instinct was left out of the Dragon Ball Super: Broly movie. Hmm… A important detail that I believe my Quora colleagues are missing about your question is how you phrase it. Dragon Ball Super: Broly Should Be the Saiyan to Master Ultra Instinct. If we’re talking about Tournament of Power UI Goku vs Dragon Ball Super Broly, I honestly believe this new Broly would destroy that UI Goku.
The Saiyan may have lost his match against the Universe 11 fighter, but Goku got to experience the godly power that comes with Ultra Instinct.

So, it is only fair for Broly to get a go. You said Super Saiyan God Blue! The Dragon Ball franchise has almost always featured fighters who physically transform into even stronger states and, as the franchise's main protagonist, Goku has more transformations than any other character in the long-running manga and anime series. > Which is the most powerful, Super Saiyan God Blue, or Ultra Instinct?

Dragon Ball Super saw the Saiyan martial artist attain his most esoterically powerful form yet, the Ultra Instinct state.
... and established that the latter is basically a canon version of Super Saiyan 4.