The guy did the smart thing: he resisted the urge to strike back. If he had struck back, the story we're reading would have been very different, as I said.
There's no reason to assume he is a coward or a pussy. He might be a pretty tough guy, but with enough sense to realize the SMART thing to do was get it all on camera, call the law, and put the video out there for people to see.
He went to the man that hit him where he sat in his car, and on film asked him what was up, told him he was going to call the law, etc.... that took either balls or stupidity, the guy had already demonstrated a willingness to use violence.