I thought I was imagining things or I misread their ad then I found it
HERE
World's Fastest AF*
* Among interchangeable lens type digital cameras available as of June 30, 2011. According to our in-house test conditions, with an M.ZUIKO DIGITAL 14-42mm f3.5-5.6 II R lens mounted on the OLYMPUS PEN E-P3 camera, with the lens at the infinity position, and with the subject at a distance of 1 meter and the lens focal length at 35mm (70mm at 35mm camera equivalent), AF calculation time is the time between when the shutter button is pressed and the start of exposure, focus to shutter release.
I guess it includes all DSLRs too as they are also Interchangeable lens type digital cameras! :bsmilie: