Exum is as fast as Rose, and taller/longer. He's also less selfish and a better distributor.
I'm not saying Exum is an equal athlete to Rose and Wall, but his potential impact on the game is elite. It depends on work ethic and mental toughness. When Wall and Rose came into the league, neither was a great shooter or passer. Exum is a guy who can really play.
I have Exum as #4 on my board, and would gladly play him ahead of Burke as a starting PG.
exum is faster than rose? that's like saying jeremy lin is faster than rose in straight line because of 3/4 numbers.
rose is an elite athlete. i don't see that from exum's tape on youtube.