Maybe U.S.-style wasn't the correct term, but since the NBA is regarded as the top basketball league in the country, it's what most people look up to.
The NBA tends to run a very isolation-oriented offense. This means that a point guard usually brings the ball to half-court, and if the PG is the main iso guy, he keeps the ball, or he dumps the ball to the main iso guy. The rest of the offense then spreads out so that iso guy is 1-on-1 with the defender. He'll usually play 1-on-1 (taking a shot or driving to the basket if he can) until there is 10 or so seconds left, and then the offense will start really moving.
Being from Cleveland, we saw this in the extreme when Lebron James played for the Cavs. We nicknamed this the "Lebronfense", because the entire offense (especially in the playoffs) consisted of Lebron holding the ball for 15 seconds and then making a move. This generally doesn't happen as much in other countries and leagues as it does in the NBA. Generally, guards and SF's who score a lot in the NBA are iso-specialists.
I'm not well versed enough in basketball strategy, so I'm not sure why this happens. It likely has to do with maximizing a superstar's athletic ability and overall impact on the game, but that's just a guess.
