1. Dan Inosanto said, "To Bruce, a fight was a great experience." He was of course so skilled that he could play with people.
2. He also had a different side to his fighting personality; we can see it the way he treated opponents after he defeated them. Examples, during his Seattle years with the karate guy who challenged him. He told his friends that he had been in a car accident to explain his facial injuries. BL just let the incident go. Or the famous incident on ETD set; afterwards, the guy shook Bruce's hand. (I've read in Hong Kong magazines there may have been another challenger; this guy was possibly killed by Triads because they had insulted BL.) When he could have permanently injured attackers, he was content to just 'flatten them.'