I actually did this using a similar methodology to the barb buff proposal in thie thread linked below. The truth is barbs were not the worst class for years as claimed. This has been independently confirmed.
Barbs deserve a buff, but this part of their argument appears invalid. The only counter argument that has been put forth is that barbs are not the weakest mathematically, but their “observed” strength is greater than it appears since top barb clears use wonky mechanics. Of course, this does not take into account gimmicky mechanics that are employed by other classes for their top clears.