Trump has physical and mental courage. This proves it.
http://articles.philly.com/1991-11-20/news/25769814_1_donald-trump-marla-maples-big-bat
Assuming your story is true, being one version supported it and another didn't. Lets assume it is true for argument sake. It proves trump talked to the mugger and did nothing physical. He didn't offer a ride to the hospital or anything. I will admit it was bravery is some capacity (who knows if his driver was built like a Mac truck backing him up).
The article says one witness said this.
Kathleen Romeo, a 16-year-old student at St. Michael's Academy in Manhattan, said cries of "There's Trump!" went through the crowd of onlookers when the erstwhile deal maker emerged from his limousine in front of a Smiler's deli.
"A lot of people were surprised that he got out to see what was happening," Romeo said, adding that the bat-wielder ran off just before Trump actually appeared, and that Trump, "just looked around and went back into his limo."