You have significantly more –resistance on a 105 build, and –res is far more important than the raw damage number shown on the stats screen. This is all pretty basic stuff.
you are literally saying garbage. you realize that maxroll calculates the effect of -res on their calculations, right? i am in no way implying just the damage shown on the stats screen is higher, but the fact that you cast your damage 1 frame faster, and the fact that the innate immunity of most mobs like in chaos are not lightning immune to start. the math actually isn't that basic, as you put it. It completely depends on the LR of the monster ur trying to kill. If they are typical mobs in chaos, like the Abyss Knights or the Lords, they die way faster. The only monsters with good immunity is on the left seal, those the self weild on average is like maybe 5% more.
"pretty basic stuff" -- perfect demonstration of the Dunning-kruger effect