I don't have secret intel. I think the Jazz want Tre Johnson or would take VJ Edgecombe, but there's a possibility that neither will get to #5. Ace's pre-draft process hasn't been going well, and while he's a big-time talent he might pose certain risks that the Jazz are not willing to take.
If the Jazz want to run an offensive system where the ball really moves, where everyone can shoot and where multiple guys can initiate, Kon fits that model very well, as does Tre. In that context, you look at Kon as a jumbo-sized initiator, a ball-mover who makes reads at NBA speed and makes the right play both on and off the ball. Then obviously he's a high-level shooter.
So it's a question of playstyle. The Jazz might not want a ball-dominant point guard like Fears. It's difficult to be efficient that way, unless Fears becomes a big-time shotmaker. The Jazz might also shy away from a high-volume shooting wing like Ace, especially if they're not sure that Ace is going to be a team player.
So I can roughly see the rationale.
