Hint 13 states that the bonus received from "received damage taken from all damage types" becomes worse the more you have of it. Unless the tooltip is not displaying the actual value, this is incorrect.
One of my raiders currently has the 9.56% armor smith buff, the 5% set bonus from Might of the Sealer 4p, 6% from one item, and 7.2% each from the three other items. Combined, these values should result in 64.54% damage taken, which is what the character sheet displays.
Removing the set bonus should result in 67.94% damage taken, and does exactly that according to the character sheet. Going from 67.94% to 64.54% is a reduction of 5%, as 64.54% is 95% of 67.94%. The raider takes 5% less damage than he did before, i.e. the act of applying a reduction in damage taken of 5% reduces the damage taken by exactly 5% compared to before the stat change was applied. The stat does not become weaker.
In a simple example, we can assume that a hit against the raider deals 100 damage, and that the raider has a damage reduction of 70%, resulting in 30% damage taken. This means that the raider only takes 30 damage from the hit. If now an item with a damage reduction of 10% is equipped, the damage taken would go from 30% to 27%, The raider now takes 27 damage, instead of 30, from the hit. That is a reduction of exactly 10% compared to before the stat change occurred, showing that even at very large values, the stat retains its potency entirely.
If the stat were additive instead of multiplicative, it would have increasingly strong increasing returns with increasing values. Multiplicative stacking does not turn this into diminishing returns, but keeps the potency of the stat constant. The fact that the absolute number changes less and less with more sources of the stat does not mean that the stat becomes weaker.
Hint 13 states that the bonus received from "received damage taken from all damage types" becomes worse the more you have of it. Unless the tooltip is not displaying the actual value, this is incorrect.
One of my raiders currently has the 9.56% armor smith buff, the 5% set bonus from Might of the Sealer 4p, 6% from one item, and 7.2% each from the three other items. Combined, these values should result in 64.54% damage taken, which is what the character sheet displays.
Removing the set bonus should result in 67.94% damage taken, and does exactly that according to the character sheet. Going from 67.94% to 64.54% is a reduction of 5%, as 64.54% is 95% of 67.94%. The raider takes 5% less damage than he did before, i.e. the act of applying a reduction in damage taken of 5% reduces the damage taken by exactly 5% compared to before the stat change was applied. The stat does not become weaker.
In a simple example, we can assume that a hit against the raider deals 100 damage, and that the raider has a damage reduction of 70%, resulting in 30% damage taken. This means that the raider only takes 30 damage from the hit. If now an item with a damage reduction of 10% is equipped, the damage taken would go from 30% to 27%, The raider now takes 27 damage, instead of 30, from the hit. That is a reduction of exactly 10% compared to before the stat change occurred, showing that even at very large values, the stat retains its potency entirely.
If the stat were additive instead of multiplicative, it would have increasingly strong increasing returns with increasing values. Multiplicative stacking does not turn this into diminishing returns, but keeps the potency of the stat constant. The fact that the absolute number changes less and less with more sources of the stat does not mean that the stat becomes weaker.