He climbed 13+ crack before he did 13+ sport How did this happen oh ya also freed the Salathe Wall kinda varied talent would you not say ?
It is astonishing to me too. One climb crack to +13 as a trad climber and sudently...he is a sport climber but there is no difference. Why did he begin to be a sport climber if there is no differences (if you look at the definition that I gave, if he work the crack from the top and know where to place his pro on top rope, he is not such a trad climber. As I heard about him, I know that he did many route bottom up as it was the style when just trad climbing exist.)
If you look at railroad track. At your feet, they are parrallele and they don't touch each other. If you look far away, you will see that the two rail join to make one. It is how many people look climbing without doing the difference, but there is a difference.
For a climber like your friend, it make not a lot of difference between sport and trad because he can do both. When you climb with beginer, like I do, you will see very fast that they don't make the difference and they are not good at both.
Brave: One can have the distinguished service cross, a wife, two kid and don't want to take risk as he practice some exercises. For that person, doing sport climbing is very great because he can climb and the risk was pretty low. So the climber his brave, but he prefer some think softer.
As I don't have the same obligation, nor bravoure, I can take more risk and trad climbing is for me better. Note that if my skill is 5.4, I can climb at my limit and have the same pleasure as a climber of 5.13 who climb at his limit.