Pop is mostly right. But he's wrong when he says that Spain is the World Champ. National teams and Club teams are two different things. In the case of Clubs, there used to be a "Fiba World Cup Championship" :
http://en.wikipedia.org/wiki/FIBA_Wo...b_Championship
The last one was made iin 1999, and in 2010 will return.
Until the Fiba and NBA teams don't compete with each other, there won't be any World
Champ. Just NBA and FIBA Champs.
Of course NBA is the best league, but it doesn't prove anything. In any sport, Championships should be won, not just assumed.