This means that you have a higher chance of dealing high damage when you swing your weapon. If we call the higher damage zone of the arc the green zone then the better the balanced attack animation the bigger the green zone is going to be.
Hitting the enemy in the middle of the swing or arc is going to deal much higher damage.
If you hit the enemy at the very beginning of the arc then the hit is going to do very low damage. If you swing your axe then it is going to form an arc. The blended animation is going to affect your damage zone. If it is made by an amateur blacksmith then it is going to have lower handing and hence will have more of the unbalanced animation which means lower damage. If it is well made then you will get more balanced animations. The better the weapon the more balanced attacks it is going to have and the higher damage you will be able to do. The attack animation is affected by weapon handling.
Similarly, if the attack is unbalanced then it is not going to do a ton of damage as if the weapon was in the hands of a simple peasant. If the attack is balanced then it will deal high damage in the hands of a trained person. The attack animation is a combination of a balanced and unbalanced attack.
