A Tank Balance Megathread

[Freyyy]

Pretty sure Halone and Delerium have been shown to be 7% reductions to their respective damage type (ie, 10% stat reduction =/= 10% damage reduction)

You know, that's a thing I don't understand. Some months ago when I was talking about Berserk on forums, I was thinking that 50% AP didn't equal 50% more damage, but someone told me that in fact, it does. AP = STR. So if +50% AP/STR = +50% damage, then why would a -10% STR debuff not equal -10% physical damage ? If there is specific maths about that I would be glad to know what it is.