The Euroleagues are also a far less atheltic and more skilled league. Precisely because it's filled with 18-22 year olds, the advantage in the NCAA goes to raw athletes who are still developing their skills. The best players go to the NBA and some of the not-best-but-still pretty good players go to the Euroleagues.
This means that yeah, in the Euroleague players have to be really skilled and they apparently face challenges that NCAA and NBA players don't have to face. Euroleague teams might even be able to beat NCAA teams -- I have no idea on that question. But given that some of the best players in the Euroleague have come over to the US and fallen flat on their face (Sarunas Jasikavecius stand up), I'm not sure it's the best preparation for the NBA. Athletically it's just not the same game, and the "skilled" but slow guys have had a rocky transition. Yes, there are Euro players who have succeeded, but it sure doesn't seem like playing against "men" has necessarily been the best way to gear up for the NBA.
This means that yeah, in the Euroleague players have to be really skilled and they apparently face challenges that NCAA and NBA players don't have to face. Euroleague teams might even be able to beat NCAA teams -- I have no idea on that question. But given that some of the best players in the Euroleague have come over to the US and fallen flat on their face (Sarunas Jasikavecius stand up), I'm not sure it's the best preparation for the NBA. Athletically it's just not the same game, and the "skilled" but slow guys have had a rocky transition. Yes, there are Euro players who have succeeded, but it sure doesn't seem like playing against "men" has necessarily been the best way to gear up for the NBA.