For those not aware - OP (omnitrio) has posted a similar build, but with a Paladin.
As someone who had recently fallen in love with this gear setup, I have taken some time to compare the two to the best of my abilities. Please keep in mind that I am fairly new to this build (and Grim Dawn in general).
With that, these are my findings:
While comparable in damage, Purifier leads by a bit. I think it’s because the AoE effect of Explosive Strike and Brimstone works really well in dealing with crowds. Paladin may give offensive buffs comparable to the Purifier, but it doesn’t have the equivalent of the aforementioned skills.
In terms of survivability, however, Paladin leads by a very good margin. It has a lot more defensive buffs gained from skills (Consecration, Haven, Clarity of Purpose, etc.) Which gives things like %armor, %shield block chance and damage, stun/freeze duration reduction, and more. Also, Vire’s Might is an additional repositioning skill if your faction augment is on cooldown. Compared to that, Purifier has a bit of DA from Temper, and while Blast Shield is very potent, it also has a fairly short active time (4 sec) and a fairly long downtime (12 sec & the skill only enters cooldown after active time has ended).
In closing, when using this gear & devotion setup, I like the Paladin more because of a more solid defense. Fortunately for my Purifier, I’ve got the Dagallon’s Set farmed.
Ice and Fire I use for Life Leach but in last patches was many changes
And now I use another ring, relic and augments
Update: I use Mark of Calamitous Desires because this medal give A LOT of flat OA and energy regeneration
In such build it need at least 13-15 in GT, if you have less mana regen than the play will not be very comfortable