Agreed with Connor; somewhere in the ballpark of "human-y levels" for the most part, "whatever the story wants" otherwise. Aether is a force multiplier that increases combat potential in most of the skills we see. They're not going to make a new "Warrior of Light interacts with item" animation for every weight of item, so some are exaggerated or at scale.

But when Zenos and the Warrior of Light get into a street fight, they still just traded slugs to the face that, if they had any degree of preternatural muscular power, would have caused instant death.