Ur way of building sorc is the reason why i could easy take down barb boed fire sorcs with my blizz on d2pk. I would never break their 9-12k mana. But i would kill their HP.
My blizz had -275 enemy CR. And enemies has -100 res in hell.
So enemies would need 375 resists to have 0 resists and 450 to have 75resists.
Anyway lets make it easy. FB vs FB.
If you have 30 fire res, and 95 ES, enemy has 22k fb damage.
22000 * 0,17 * 0,05 * (1-(30/100)) = 130 life lost
If u have 75 fire res:
22000 * 0,17 * 0,05 * (1-(75/100)) = 46 life lost
This is assuming you have 95 es.
What does 95 es costs you?
If rules are no precast, then that costs you inzane ammounts of damage. Several thousand damage lost.
So lets say your a 83% es cube precast. You lost zero damage by wasting points.
30 fire res:
22000 * 0,17 * 0,27 * (1-(30/100)) = 706 life lost
75 fire res:
22000 * 0,17 * 0,27 * 0,25 = 252 life lost
Well, this 83 es also makes you loose less mana each hit. You kinda balance out a little more.
Lets say you have 1500 life and 5000mana.
The damage reduction vs mana with 20tk base is 0.75.
So each fb will take:
22000 * 0,17 * 0,75 = 2805 mana lost if you had 100% ES which is not possible.
22000 * 0,17 * 0,75 * 0,95 = 2664
22000 * 0,17 * 0,75 * 0,83 = 2328
So, as you can see. There are ways of utulising ES and not have 95% es. And if your other stats are high you can balance it for more tankyness. Ofc this would reduce defwhore survivability.
Not all attacks deal 22000, a physical attack can deal everything between 1k and 30k damage. And you can make a balanced build which survives a lot.
So adding DR%, RES%, PLR% and repl to your build, and not precast ES to 95 will allow you to get maximum tankyness, damage etc. And both mana and life can repl quite fast...
There is quite a lot difference between a low damage "immortal sorc" and a high damage "tanky sorc".
DR% helps vs Crushing blow and direct physical damage. Crushing blow will directly impact ur HP.
% res will help reduce the part of the damage mana dont absorb.
PLR and PR% will help reduce damage from mana
Repl will make sure your life and mana repl up again quite fast.
You can even bring in absorb. There is no point in having 5,5k mana vs a blizz, in this case changing a soj to a raven would help.
But there are loads of rules.
Back in eu d2lod the rules was:
95% ES sorc: Zero abs allowed(except NW) and +5max res as a maximum.
Meanwhile there was other rules for low ES sorcs. Like base lvl and no precast es.
Precast es was also allowed on eu nl back in d2lod.
ES sorc was not allowed to use oak.
So yes, if your going GM you have to build according to current rules.
If you do pubs, there are ways of balancing better.
Fire sorc is the excellent build for such. You can have 1 main strong gear, and you can have swaps for better PLR/PR, better damage or even max block.
But extreame ammulets and diadems would be required to opimalize it for best possible combies and least ammount of wasted stats in having different setups.
Perfectly summarized! Resist surely matters!
D2:R