I thought this was a pretty solid analysis for why ball should be chosen over fultz.
Listen to the Data: Draft Lonzo Ball Number One - TSJSports.com | Breaking Sports News and Analysis | @TSJ_Sports
"I’ve compiled data from Synergy Sports Technology on every NBA starting point guard about the types of
actions point guards do most. From amassing that information, I was able to determine how frequently an average NBA point guard does each key action: ...
Ball is a much more well-rounded player. Fultz is elite scoring from the pick and roll, but ball is elite at almost everything. Both players are good, but Ball’s numbers are fantastic.
In Fultz’s favor is that he’s more effective than Lonzo in the action point guards do about 58% of their possessions, operate out of the pick and roll. However, Ball is superior in every other category."