Interesting article from 538. Attempts to predict the best players in the 2015 NBA Draft. They indicate Silk has the highest % chance to end up as a "super star"caliber player. They claim he has a 15.2% chance to fall into that category, edging out Towns (13.5%), and nearly doubling #3 (Justise Winslow 8.4%).
http://fivethirtyeight.com/features/projecting-the-top-50-players-in-the-2015-nba-draft-class/