Do you prefer armor or attack?

Indeed, with equal sums of combat parameters, but when the difference (attack-defense) is greater than 0, the offense is better than the defense, not by 10%, but only by about 2 percent in the given case, and this difference decreases as the difference (attack-defense) increases. So, if we take the opposite scenario, 0-10 and 0-10, then the damage advantage of 10% remains.