KappaWing

So if the cutoff point is four stories for landing on your feet, what would be the cutoff point for landing on your head? BTW this one guy jumped five stories and survived, but was paralyzed. "It also features the final drum performance from Carl-Michael Eide (Czral), who is now paralyzed from the ankles down after an all too unclear accident in which he fell from the fifth floor of a building." Link

I was watching this movie where this guy fell two stories, landed on his head in the pavement, and instantly died. How realistic is this? It seems like someone would need to fall much further.