No, I get it now, but... 

You are conflating being powerful with being domineering. Those are often shown together, but, do not have to be. 

This is the same concept of being peaceful but exceptionally capable and willing to use swiftly applied violence if a situation arises that requires violence to solve. If a person is not capable of violence, then they cannot be truly said to be peaceful since they are not choosing to be peaceful, they are required to be based on their posture.