As a general rule of thumb, anyone you give a POT rating of 75+ to will eventually become an all-star.
I would only give 4-5 people 75+.
Maybe another 5-6 70-75.
And the rest below 70....even giving guys ratings in the 40's and 50's.
If you look back at previous NBA draft classes from 5-6 years ago, you'll notice that at least 40-50% of the players aren't even in the league anymore.