Some more info on Williams from MaxPreps 11 games into this season: 12.7 ppg, 4.3 ast, 4.1 reb, 2.2 stl, 1.5 blk
52 made FG, of which just 9 were threes. 61% from the FT line (27/44), which works out to 2.5/4 per game (he gets to the line more often than Sanders or Johnson). That's roughly 3 or 4 layups/jumpers (likely more layups given his trips to the line), 0 or 1 trey, and 2 to 3 FTs per game
So, it looks like he's another slasher without much touch more than 5-10 feet from the basket... offensive rebounds leading to second chance points, drives leading to FTs that he doesn't make at a high clip, very few three pointers, and not much in the way of defense.
Compare to Mensah's numbers against JC competition instead of HS competition: 11.5 ppg, 4.3 ast, 6.0 reb, 0.7 stl, 0.1 blk. Also 61% from the FT line (1.9/3.4)
Not sure where the 1000ox better expectation comes form.