Well, results are in everyone. Did this test using king diamond batts, one shorty, one regular, one xl. Watched the chargers as best as I could to get the most accurate times possible. Had them by me constantly watching for light changes. 
Shorty charge times:
USB- 78min
Old School (OS) wall charger- 83min
Slim Line (SL) wall charger- 67min
Regular:
USB- 123min
OS- 126min
SL- 97min
XL:
USB- 168min
OS- 171min
SL- 139min
Roughly 19-21% faster overall than the old chargers. What I found odd was even with it having a lower mah output, they still delivered the promised 20% gain. My only complaints with it are the coloring (prefer it was in black, white screams apple product, a big boo for we mac haters out there), and if you already own a good amount of the old chargers and have plenty of spare batts, then there's not much need as of yet to make the switch. Hopefully we'll see this newer charger technology migrate to the usb chargers sometime soon....
Shorty charge times:
USB- 78min
Old School (OS) wall charger- 83min
Slim Line (SL) wall charger- 67min
Regular:
USB- 123min
OS- 126min
SL- 97min
XL:
USB- 168min
OS- 171min
SL- 139min
Roughly 19-21% faster overall than the old chargers. What I found odd was even with it having a lower mah output, they still delivered the promised 20% gain. My only complaints with it are the coloring (prefer it was in black, white screams apple product, a big boo for we mac haters out there), and if you already own a good amount of the old chargers and have plenty of spare batts, then there's not much need as of yet to make the switch. Hopefully we'll see this newer charger technology migrate to the usb chargers sometime soon....