He is now the #3 prospect on the draftexpress board.
http://www.draftexpress.com/rankings/Top-100-Prospects/
3. Josh Jackson
SF (Kansas - Freshman)
19.9 years old | 6'8" | 203 lbs
2016-17 NCAA (21 GP)
15.7 PPG 6.7 RPG 3.1 APG 24.6 PER
Keep in mind he plays way better defense than either Fultz or Ball.
And defense is half of the game.
Is defense really half the game? How come guys like Tony Allen and Thabo Sefolosha are overlooked for massive contracts/All Star games that James Harden and Carmelo Anthony get?
I think offense is valued at 1.5-2x as much as defense in the NBA.
I think you are right when it comes to individuals. I think this is due to the fact that there is a relatively wider range of effective offensive output than effective defensive output by individual players. So the value is found in the variance from player to player. The difference between most defensive players is less so there is less relative space for value to be found.
Basketball is an offensive sport, so the default is scoring. No one shuts down an offense by themselves, but one player can create offense (for themselves and others).
Of course, this changes when talking about team defense and I think it's generally accepted that individually good defenders will contribute better to good team defense.