player's projected performance as a rookie
His age
His rank in the latest top 100 from my ESPN colleagues Jonathan Givony and Mike Schmitz
From bits I have gathered over the years, whether they still are in his system:
Steals are very valuable and project very well, therefore Thybulle.
Low turnover rate translates well, therefore Ponds.
Rebounding translates pretty well, blocks moderately well, therefore Bol.
Age is important, Dejounte Murray is younger than Derrick White. Two players that gave Pelton age problems were Zhou Qi and Thon Maker. A 19 year old has more upside that the 23 year old, but that 23 year may produce earlier in the contract.
FT% is a better predictor of NBA 3P% than college 3P%.
College scoring is very misleading.
Improvements as a senior are discounted.
Quality of opponents is somehow normalized.
With each new year of draft data and the changing NBA, the actual formula gets tweaked with the newer results.
The former Ford lists, now Givony and Schmitz, is a hedge to include scouting, mathematically weighed by various factors. I believe scouting is weighted higher for the younger players, less for those with more data.