Have you seen their passing or their handles? At this point there really is only one question on both of them and it's shooting. IDK how much you are going to learn from them playing 1 v 1 against other draftees as they would likely smoke most players in this draft 1 v 1. The bigger thing for these top tier guys is the interview process and what you think of their ability to improve.
They also went out and played in The Basketball Tournament, which has many high level basketball players. They did an overseas tour (not really sure how good those teams where considered). They've been out there playing basketball in front of cameras like
@Handlogten's Heros said. OTE basically just seems like a Prep School where they have the teams play NBA style basketball, but I dont think the talent level is that bad individually, just a bunch of young guys trying to play up and down style.