I'm currently playing on RetRO and it is a classic server but I only just found out that Hard and Soft defense is not reduced the more mobs hit you and for example on oriigins ro it is stated:
Hard Def:

Soft Def:

The owner of RetRO says this is due to OriginsRO using Hercules and has renewal features and he says this was only implemented in renewal.
But I have seen many posts talking about it on the net and I can't really get to an acceptable conclusion and I have never had blind faith on anyone so I am asking here so maybe if I am wrong or correct someone tells me.
I want to know because on RetRO i have seen stuff that I never saw on other servers, like a swordman tanking entire maps receiving only 1 damage and I constantly see knights or crusaders tanking tons of mobs barelly receiving damage and I can not believe that is the intended behavior, maybe I am wrong but to me it seems like mobbing is super buffed on RetRO but I need someone that actually knows if this is normal or not.