Harvey mastered vision (which made up for his speed) and balance (his subtle jukes were crazy in how effective they were) all combined with an ability to destroy defenders. What impressed me about Jamal (who also has fantastic balance, creating some awesome shiftiness) is his burst. I swear we haven't had anything like that since Staley. If Jamal can learn to see the field like Unga I feel like he could become the greatest we've ever had... Granted, nobody will be able to turn a corner like a slingshot the way Staley did... that dude was special.