A knock? Smith was the 2nd pick in the draft and a great prospect. And probably going to be a pretty good NBA player. They are nearly identical as prospects, especially when you consider how they will likely be used at the NBA level, not exactly the same, but they are that modern 4 floor spacer with + potential skill and defensive versatility archetype and will likely be used in similar ways at the NBA level.
And Smith had the better 3pt and FT shooting numbers on higher volume with less minutes against better comp.