I think that someone would take a flyer on Kris in the second round. If the NBA draft is about traits, Kris has the same physical traits as Keegan, and flashed that potential in a number of games. But if I am Kris, if I can put up 18 and 8 at Iowa next year, while Keegan wins the rookie of the year (neither of which seems far-fetched), I put myself in the top 10 of the NBA draft next year. That is significantly superior to the outcome of being drafted in the second round. The NBA never has a comp as close as Kris will have next year.
I understand the age thing, but in the NBA draft age pertains mostly to ceiling. A raw young player with elite traits has a higher ceiling. With Kris, if Keegan has the type of success that I believe he will have as a rookie, nobody is going to be raising questions about Kris's age in 12 months because they will have a really good example of to look at in terms of his ceiling.