With this in mind, lets assume that both wizard and necromancers drop 2 greater rifts and barbs get to 145 on live. Fo simplicity, I’ll assume the other classes don’t change.
Projected era if buffs/nerfs go live
Barb 145 (assuming middle of darkpatator’s estimate)
Crusader 138
Demon Hunter 139
Monk 134
Necromancer 140 (assuming 2 grift drop due to nerf)
Witch Doctor 140
Wizard 142 (assuming 2 grift drop due to nerf)
Barbs would be 3 grifts ahead of wizard and 5 greater rifts ahead of the 3rd “best” solo class. Barbs would be 11 greater rifts ahead of monks.
If barbs were buffed just a little less well (let say to a 143), they would still be the top solo class but not as far above. Remember that the top wizard build in the current era (in America/EU/Asia) is only 144. and it is being nerfed. This build was called “” by a “barb influencer”.
Although some claim that there are multiple definitions of balance, I think most have been using this term to relate to the differences between classes. In the barb buff proposal, it was reiterated that the goal was to achieve parity between classes for their top builds and also have intraclass parity.