In the original release of D2:ED intelligence gave twice as much damage per stat point as strength and dexterity, but in DKS all give +0.5%.
The added perk in DKS of applying magic damage bonuses/enchantments from weapons to spells more than makes up for the drop in the intelligence damage bonus, though.
Strength / dexterity / intelligence each give an average of 0.35 armour ratting per point, starting off higher and slowly giving less of an increase as the stat is maxed. The HP regeneration bonus from strength also starts off higher and slowly drops as the stat is raised.
