We know Cumber in base is stronger than SSBKK Vegito and we know Broly is stornger than SSB Goku SSB Vegeta and Golden Frieza in Base because he took all 3 of em on in base no sweat. Now part of the reason I think this Broly is stronger than Cumber is because remember Broly has infinite power it's always rising constantly. His zenkai boost are better than Goku Blacks. But then again Cumber took on SSBKK Vegito in base which is crazy. Actually you know what I'm gonna wait till the movie to see if Broly is OP but what from we've seen Cumber is stronger but If Broly is stronger than Cumber and Gogeta beats Broly than that means Gogeta>>>>>Vegito and knowing these writers they would do some shit like that.