Sefolosha is a 22 year old professional basketball player that has played against grown men for the past 3 years. He's a player known for his work ethic and willingness to improve as a basketball player. 6 months ago he was projected as a mid-2nd rounder.
Carney is a former college player who played in the garbage Conference USA that has also had motivation issues his entire collegiate career. 6 months ago he was projected as a top-5 pick.
Just because the no one has seen the guy play means that he is a bad basketball player. Because I've seen enough of Carney to know that he is definitely a project player at the NBA level.