I can't find this quote in the article you linked, or rather, the article I think you intended to link. What you actually linked was just a picture of a man, so I typed the name of the article in google and found this:
"Fight or flight" reactions are much more complicated than we were taught in school. That fact has implications for reacting to violence events.
geneticliteracyproject.org
So where did you get that quote from?
The plural of anecdote is still not data, and the physical impact was never called into question, so I really don't see your point here.
What WAS called into question was
A) Under what circumstances fight or flight occurs
B) Whether running towards someone for 20 seconds is a fight or flight response
C) Whether people are 'wired' for fight instead of flight, or vice versa.
And yet you have never explained how it is that the majority of people are able to comply with the orders of a police officer when their guns are drawn, and how the majority of people are able to survive being mugged without fighting. You have never explained how this isn't a valid defense when the police shoot someone unarmed. All of these disprove that this is a "common, expected response".
So perhaps he could have lived if he hasn't tried to engage in hand-to-hand combat.