Talk:Command Cards/@comment-50.173.63.124-20160702184805/@comment-28048698-20160702205653

The ATK up buff give more attack to the Servant. If the Servant have 7,000 ATK and you give him +50% then he will have 10,500 ATK. The Buster/Arts/Quick buff boost the base percentage of damage. The Buster will do 225% instead of 150%, Arts will do 150% instead of 100% and Quick will do 120% instead of 80%.

If you are only using one buff, there is no difference. It's the same to have +20% ATK or +20% Quick. But if you have more than one buff, it's better to boost both ATK and Command Card instead of just one. I mean, it's better to have +20% ATK and +20% Buster instead of +40% ATK or +40% Buster. That's why, in example, Alexander is very useful. He boost both ATK and Quick thanks to his skills.