Hi Bob,
Thanks for your help. I submitted Ticket ID #XDR-320-65823. From what I have read the difference is about 2 Watts for sleep mode, and 65+ when awake. While the difference of one light bulb a day isn't a whole lot, there is some cost to it, and if you add that up across all computers that would sleep, especially those who want to maximize their laptop unplugged time that would make a difference.
-D-