Yeah, well, he didn't just decide "Oh let's run over some roofs" one day, then went out and did it. There are years of training behind that.
Eh, I knew a lot of kids who did this kind of stuff, almost naturally. My brother and his friend climbed from one floor to another ten stories up to get into some girl's room because her parents wouldn't let her hang out with boys. When parkour videos got popular, they started doing that, too. They weren't gymnasts, or even especially athletic, but I never saw them slip, and neither of them wound up in the hospital for it. Call it luck, but I believe there's definitely people with innate talent for that kind of thing.
I think one sprained an ankle from a two story jump, but still, I thought it was impressive that nothing broke.