The only similar thing about those players is that they were ranked #233 in their class so using them as direct comparisons to Betts is pretty flawed right from the get go. Not to mention he was rated significantly higher than that before he reclassified to bypass his senior year.
There is no guarantee Betts will be ready to contribute this year and he almost certainly won't be a finished product. But until we actually see him on the court there is simply no way to know for sure what he is going to bring to the table.
Relying on freshman to be the stars on your team is a dangerous proposition. Relying on freshman to be contributors isn't nearly as dangerous and happens all the time. Betts will be the age of a typical true freshman but he should be way ahead of the typical true freshman due to already having a full year in the system under his belt.
How is it flawed logic comparing him to similarity rated players and their production Freshman year? The point is, expecting production as a FR from someone that rates where he did isn't likely as it relates to winning. Hell we saw that turned out this last year when we had to rely heavily on Henley, JOJ and Carrington. Who were actually rated higher. I'm hoping for the best, but if he gives us more than 4/5 ppg, I'd be surprised.