Bruce didn't treat Clark like he was a powder keg who was liable to explode. He didn't hold things back, didn't cautiously test limits to see where Clark was. He observed, yes, reactions and actions and time between and how much skill Clark used and which skills were present in how he fought.

He did much the same with himself, seeing how much his reaction time was down, gauged just how sluggish he was in general.

Mostly, though, he just went after Clark. Went after Clark with intensity and ferocity, like this was a regular sparring session between the two of them, or maybe even something a little bit more than that. He pushed at him, came in close, made demands for responses and didn't let up unless he was made to.

It was skill and form and function and, yes, a fight.