Monster flee does not matter much, because almost nothing survives 60k damage/ hit anyway. Even diablo on P1 goes down in one hit if you roll dmg good (he has 113k HP, Pure DPS variant of this sorc can deal 141k DMG in one hit).
I also have Vengeance paladin build with 80k DPS and 3 Sunder Charms (to deal 3 types of ele damage) here, so that should be better than dual Dream Zeal / Grief in terms of DPS:
