Take note:
INT = Base Int + (Base Int * (Rank * 10%)) + INT bonus from equipments, buffs, etc.
Magical Attack = Magic attack from Equipments + INT
If we take example of an undergeared level 200 character in Rank 6 with Base INT of 200 while disregarding INT bonuses from equipments, etc. Then:
INT = 200 + (200 * (6 * 10%))
INT = 200 + 200 * 60%
INT = 200 + 120
INT = 320
And if that same character is equipped with a 170 magic attack weapons, then we got:
Magic Attack = (170 + 320)
Magic Attack = 490
This is the rough skill calculation for magic classes using magic skills:
Total True Skill Damage = (((Magic Attack + INT) + Skill Base Damage) * Hit Multiplier) + (Skill Damage * Enhance Attribute)
Another Note: Zaibas have the flat INT scaling, added after the Skill Base Damage, which change the damage skill calculation for Zaibas to:
Total True Skill Damage = (((Magic Attack + INT) + (Skill Base Damage + INT)) * Hit Multiplier) + (Total True Skill Damage * Enhance Attribute)
So, with all those things, Zaibas from a cleric with character level 200 in Rank 6 with Base INT of 200 while equipping a weapon with Magic Attack of 170, disregarding the the enhance attribute, then we got:
Zaibas Skill Damage = (((490 + 320) + (350 + 320) * 19)
Zaibas Skill Damage = (810 + 670) * 19
Zaibas Skill Damage = 1480 * 19 = 28120
Compared to the same cleric casting Carnivory, we got:
Carnivory Skill Damage = (((490 + 320) + 1100) * 22)
Carnivory Skill Damage = (810 + 1100) * 22
Carnivory Skill Damage = 1910 * 22 = 42020
Then, what’s my point?
My point being that Zaibas scales with INT 3 times, Heal and Cure also have the same treatment. However, from the mined data we got, Druid’s Carnivory doesn’t have the added INT scaling that Krivis’ Zaibas and Cleric’s Heal and Cure get, which causes it (Carnivory) to scale with INT only 2 times, but it does have much more hit count than Heal, Cure, and even Zaibas.
Tl;dr : Zaibas, Heal, and Cure scales 3 times with INT, causing it to heavily dependant on INT to reliably cause damage, while Druid’s Carnivory only scales 2 times with INT but with good Skill Base Damage and much more hit count, causing it to less dependant on INT than the 3 skills that I mentioned before while still able to damage the enemy reliably.
(For a level 200, this is a heavily undergeared player, if there’s someone that can provide data for a properly geared level 200 - not overgeared, but not undergeared either, like weapon + 5, level 3 gems slotted, blue equipments set - then please by all means spoil us here.)