Long ago, I really don't like NBA naming their champ as World Champion, however until recent years, international players are on nearly every team of NBA. While team USA keep losing for 3 consecutive international games, I am sure the NBA Champ could win with ease.
The fact is, US players are no longer the best, international players are catching up and even surpass US players. Another important point is, a team's winning/losing is not only depend on players, also on coaching. To sum them up, NBA Champ is really the World Champ. USA Team is only a team with advertising value, nothing more.