Lol if you have nothing productive to contribute then why even post. I'd like to know why you think this is an inaccurate system, and maybe what you'd do better.
Partywide damage buffs are too indeterminate to calculate, and self-only buffs/debuffs were factored into the math already. Sustained damage is also largely indeterminate and almost impossible to calculate--and honestly, it's not a big factor in the actual game itself. Almost all combat in Crystalline Conflict is decided by properly placed burst. The only value you get out of sustained DPS is the possibility of forcing out a Recuperate, which can easily be Elixir'd back--if the skirmishing is light enough that you have time to leverage sustained poke, then it's light enough to LoS and Elixir.
I am keenly aware of exactly what WHM LB does and how often it's up. Again, I'm not in any way saying that it's a bad or low-value LB--but it CAN be played against. Compare AST LB, which has precisely zero counterplay and arguably vastly more value. I get that WHM is big scary laser with tons of value attached, but with correct positioning and good usage of crowd control nullification, you can turn WHM LB into "18k damage to one person with tons of value attached", which is honestly approaching playable. It's not like AST LB, which strangles the fight with overwhelming numerical superiority.
LOL a majority of the jobs are clumped in B tier, don't be daft about it. Unless you think none of the scoring criteria are valid or that I'm purposely omitting some criterion in which BRD would excel above all other jobs, there's not really any sort of manipulation I can do to make BRD look bad on purpose. Especially after the nerfs, I don't think there's any pretending that BRD is actually a good and competitive job when compared to things like DRG.
Add me on discord @ nadoP! I'll DM you the sheets, and that way you can ask any further/more detailed questions in DM's.