Put me in the camp that the game chooses you, not vice versa. Every once in a million a Bo Jackson comes around, but that's about it. Most of the wonderkids at the high school level are simply just that. Or you could look at individuals who actually bleed soccer and meet the supposed parameters of a great theoretical soccer player; i.e. Steve Nash, NBA point guard. I'd say he made the right career decision.
Nash, a 2-time MVP, future HOf'er, on his soccer potential:
"How good are you?", I asked him after his team won. “I guess I could have played professionally,” he said. “If I’d focused on it. Sometimes I wish I had. But that’s probably just a grass-is-always-greener kind of thing.”
It's like saying John Smoltz, who has (had) all the free time in the world to pursue golf, was tour quality. He was miles and miles from there, and eons from Ryder Cup caliber, which would be the equivalent of national team quality.