Also, what about Ingles experience. Casspi has played professional before like Ingles. That gives him an advantage, plus the fact that he has played in the Olympics against Team USA among others. Sure College Basketball is a great system in developing future players. But if you look at a College Basketball teams schedule, you will see that probably only half of their games are against high-quality sides.
e.g. Look at Patty Mill's St. Mary's Gaels. Look at some of the wins they had last season: Bet Seattle by 31, Bet Vanguard by 28, Bet Pepperdine by 50, Bet Loyola Marymount by 25, Bet E.Washington by 20, Bet San Diego by 23, Bet CS Fullerton by 25. As you can see there were alot of games in their schedule that weren't that close and they played against some low-quality teams. With Ingles playing in the NBL, games were alot closer and he was coming out and playing teams that deserved to be in the league. Alot of games in college are non-conference no-contest games.
Therefore playing professional can be advantageous because you are playing high-quality teams week in week out.
I think NBA Coaches and Scouts read too much into the wrong stuff. They evaluate everything from a players bench-press to full court sprint. But they tend to forget about the players intangibles..His experience(international and in a pro-league), his attitude etc.
Look at Stephon Marbury..NBA Scouts did not consider the intangible factors, such as his attitude, and he became a cancerous assest to any team. That was an example of scouts and team personnel focussing too much on his nice handles or his good passing ability.