"one's attack strength" refers to how strong or powerful someone is when it comes to attacking or fighting. It measures their ability to cause damage or win battles in a combat situation. Full definition
This again does not really seem to shake the balance of the gameplay in any direction, but the increased attack strengths on newer weapons are noticeable and good fun to mess around with. (totallygn.com)
Buying more attacking strength would be a waste of money, when our problem is giving away chances and goals. (justarsenal.com)
You'll want a high Attack Strength to deal more damage, while skills attached to the weapons will increase their potency in battle. (nintendo-insider.com)