The Superhero Database Classification number, or SHDB Class, is a number that represents the overall 'power' of a character. All traits of a character are used for calculating the Classification.
What it DOESN'T mean
This doesn't mean that a higher class would always beat a lower class character. But the bigger the difference in Class is, the more obvious it is who'll win in a fight.
How is this calculated
( INT^1.3 + (STR*0.5 )^2 + (SPE*0.5)^2 + DUR^1.6 + (POW + (SPS*SPL))^2 + COM^1.8 ) ^ TIER
Super Power Score and Level
Every Super Power has a score (SPS) that is used to calculate the Class. Each Super Power also has 3 levels (SPL). The level is set when connecting that Super Power to a character. The level determines the final score, of the Super Power, being used in the calculation.
Current Goku M.U.I : 15 Septillion
Angel Moro : 14.7 Septillion
Jiren L.B : 14.5 Septillion
Beerus Manga : 14 Septillion
Gogeta Blue Broly Movie : 13.5 Septillion
Goku M.U.I 12 Septillion
Broly Lssj F.P 11 Septillion
Beerus Anime : 10 Septillion
Goku U.I Third Omen : 10 Septillion
Vegeta T.O.P Saga SSBE F.P : 9.5 Septillion
Goku Second Omen 9 Septillion
Goku First Omen : 8 Septillion
Kefla Lssj2 f.p : 7 Septillion
Vegeta SSBE : 6.5 Septillion
Toppo Hakaishin : 6 Septillion
Second Of all Hakai doesn't work on someone stronger
and
third of all Beerus did use f.p in chapter 28
it was stated by whis and Goku
So Broly should win this with extremely high difficulty