Quoted from "squirrlee;569498"
The only thing I can think is Pure Soul and Wisdom are not stacking the same on both combos. It seems to stack on Mage/wl, but not on Warlock/m ? It is the only thing that I could see that would make such a difference general skills, that would effect both combos.
Try testing the skill on Warlock only with no secondary.....that way if the damage is the same as on Warlcok/m then you know Wisdom is not having an effect on the warlock main.
Quoted from "effervescent;569517"
http://www.runesdatabase.com/skill/498745/industry-fire
That elite makes Soul Pain inflict extra damage for M/Wl.
Not sure about whatever difference you're noticing with Weakening, though. Considering it does dark damage, it should do less on mage than it does on warlock due to the lack of dark mastery.
Quoted from "squirrlee;569684"
That's juat it....the OP is doing more damage on Mage than Warlock.
Quoted from "Ziav;569665"
Weakening is just the opposite. It does substantially more on warlock than on mage.
Quoted from "Sandzero2k3;569786"
Heres your answer. When you're mage/warlock, Industry Fire turns Soul Pain into fire damage and your mage only passive Fire Knowledge increases fire damage. At lvl 50 it gives 63% more damage for fire spells. Also i believe all fire spells in this game do more damage than any other type in general.
When you're warlock/mage as far as i can see Weakening Weave Curse is dark damage so its boosted by Ill Will, increasing dark damage, which your mage primary wouldnt get.
On a side note and using Romwiki which i'm not sure if its correct, it doesnt say if Ill Will stops at lvl 50 or not but at lvl 50 it only gives about 40% more dark damage according to my calculations.