Kyle Singler is light years ahead of Josh. When you see him take the court in a White and Blue uni next season in Cameron, you'll know you are worrying too much. Kyle has a chance to be incredibly special. He can do both things McRoberts can (pass well and dunk) as well as the things McRoberts can't (shoot from beyond 15 feet and score efficiently under the basket). He has the entire package.
Josh may have been rated number one, but his overall game was nowhere near as complete coming out of high school as Kyle's is. IMO, he'll be a rich man's Dunleavy. Only better. And that is saying something