LILLE, France — Maybe in the not-too-distant future, once they’ve convinced more kids in the young country to surrender soccer for basketball, South Sudan will draw sweat from the best basketball country in the world. Like, in a real international game, not an exhibition, as it did a week ago. Because what happened Wednesday was a meeting with Team USA and an understanding of the measuring stick — as in, the distance between an established power and an upstart. It wasn’t suspenseful or close or competitive except for brief stretches. Such is the case when the USA is bringing unapologetic defense, a determined LeBron James and so much, much more. Like: This team is bringing the all-time USA Olympic scorer, Kevin Durant, off the bench. And: This team can beat you with Steph Curry going zip-for-6 on 3-pointers. Such is the luxury for the Americans, who won for the second straight game and clinched a trip to the quarterfinals at the Paris Olympics without...