LeBron James is the best player in the world, pretty much objectively. This does not necessarily mean that he was more important to Team USA's gold-medal Olympic run, though.
Who you prefer is a matter of taste. KD was scorching from deep, hitting on 52 percent of his threes—a stat all the more ridiculous because Durant hit 4.25 three pointers per game. He wasn't a specialist, he was raining from all over the court.
LeBron, to his immense credit, controlled the pace of the games. He handled the ball and dished out 5.6 assists per contest. Remember, a FIBA assist is harder to get than an NBA assist. This stat reflected some premium defense by the Heat point forward.
Both acquitted themselves wonderfully on the international stage. This is a closer call than the thrilling gold-medal match between Spain and America.