Auto-translated
In general, defense turns out to be more effective when the percentages of attack and defense are equal. Let me explain. Suppose the attack increase is 30% of the normal value. The incoming damage is also reduced by 30%. It seems that attack and defense compensate each other, but let's calculate: Normal attack 100 HP + 30% bonus = 130 HP. 130 HP - 30% (reduction in direct damage) = 91!!!!!! But it was 100 without the attack bonus!
Therefore, the attack bonus in a battle with defense should be higher!
Something like that...
With equal values in a vacuum, an attack expert (30%) is better than a defense expert (15%). For example, 1 angel with attack will hit 1 angel with defense for 55, and in return, they will hit for 50.
If the hero with armor has a primary defense skill, let's say 3, and the attacker has an attack of 0, then both angels will hit for 50.
For armor to be advantageous, the difference between the second angel's defense and the first angel's attack must be greater than 3.
For example, the attack expert has 5 attack, and the armor expert has 9 defense; the attacking angel will hit for 49 and receive 50.
The higher the primary defense skill, the more advantageous the secondary defense is, and the same applies to attack.
P.S. Behemoths on the third level are a bit late. ;)