Full Wanderer = 42% boon duration with Concentration as a minor. Diviners will have concentration as a major
Diviners is POWER/CONC with pre/fer. If you wear full set ...
If concentration scales linearly with it's stat, Concentration as a major will give 84%.
With precision as a minor, you get 35% ... with Right Hand Strength, Retribution and Righteous Instincts, you get 100% Crit rate, no boons needed
With Virtue, you get 100% retal boon duration with lots of retal access on active Virtues
WIth ferocity as a minor and Retribution trait, I get 883 ... full zerker gives 961 ...
Your ability to self stack might is really great (3 from VOJ, lots ofrom Righteous Instincts)
Run Durability runes if you want the defensive and max out your boon duration to 99% ... run the Scholars for all out DPS.
Food will be Power/Fer
I smell a nerf even before or soon after a release. All this seems really over the top.
If you think balancing is only driven by performance and justified by comparisons to other classes then prepare to be educated: