peekay4 - that matches the PA-28 POH. The short-field procedures call for acceleration to 52kts and then immediately lifting off, whereas the soft-field procedures call for lifting the nose as early as possible, and then lifting off as early as possible.
Presumably on very soft ground the drag from having the wings stalled (especially at low airspeed) is less significant than the drag from having all the weight on the wheels, so you could end up with a shorter takeoff run like that. For a "nice" runway (where drag from the wheels is likely to be minimal) you'd definitely get better acceleration and therefore a shorter takeoff roll by keeping the nose down until reaching liftoff speed.