Thabo over Carney
Carney makes little sense for the Bulls because he is not a ball handler. He is a dunker and jump shooter. The Bulls liked Thabo because he can handle and distribute the ball. They wanted someone who could play the point next to Gordon. The only guys who could play the 2 and the 1 were Roy, Sefolosha, and Brewer. Paxson obviously thought Thabo was better than Brewer, and I also think Paxson didn't see as big a gap between Roy and a player like Thabo as there was between Thomas and other players at the four. The next 4 drafted was Cedric Simmons that's a pretty big gap.
I also think Khryapa will be a good role player for the Bulls. He came out of a highly structured and defensive struture in CSKA Moscow. Playing for a structured team like the Bulls will help him. I think he would be upgrade over Songalia.