Makes a lot of sense. Khwan might be talented, but he is not a good shooter, and his only position is PG, which does not fit for our team because we have one better. Buck is a great athlete and has some talent, but is not a great shooter or ball handler, which is likely a big reason why BCS schools and probably numerous mid majors showed no interest in him.
These guys are good to have on your team as 15 minute role players, but they have too many holes in their games to be on the floor for much longer than that. With their size, you have to be able to consistently make outside shots and draw the defense out. They did just the opposite, teams played off of them, clogged the lane, and dared them to shoot. That is never a recipe for success.