Raising Attack and Def

Ok so as far as I can tell the only way to increase your ATT and Def is to buy and equip an item to your weapon, armor and vehicle. You can also put skill points into your ATT and Def. Are there any other ways to increase these stats?

 

Ok so to expand a little bit. Whats the point of owning alot of weapons, armor or vehicles? Does this do anything significant at all other then to run missions?

 

more of the best attack items means more likely to win attacking.more of the best defense items means more likely chance of winning when attacked.

if you want the best chance of winning keep both attack and defense weapons and keep increasing personal atk/def as that is very important specially in this game.

also make sure to upgrade items