Remembering the most recent best college point guards of the decade... Jay Williams, Deron Williams, Chris Paul, Jameer Nelson (arguably, his team was what 32-0? and although Delonte was the better NBA prospect, Jameer was the better player on that team), and Derrick Rose (Rondo wasn't as good as any of them in college), I'd put Wall's season on the same level or higher than all of those players. I say he's an 18, 10 player, but those #s and all that anybody else posts are completely arbitrary anyways and all depends on who he plays with.
He best compares to a Rose/Paul mixture. He has insane quickness. I don't know if he's as fast as Rose, but quicker. Better court vision than Rose. Shooting ability between that of Rose and Paul. Smaller, but equally athletic to Rose. Lesser of a rebounder than both, but not terrible.