I haven't read every post in this thread, but just as most of you know the lift capacity of a skid steer is limited by the tip. An S300 is rated to lift 5848 lb to max height, tip limited (the hydraulics didn't crap out, the machine fell flat on it's face!). The point here is that the ROCs are calculated in such a manner that minimizes the liability of the company. Experience rules over all, as we know, but to answer the initial question of the S185 lift capacity...in Bobcat tests the max lift for a 185 is 3841 lbs at max height, hydraulic limited. Because of this, with a smooth lift and no travel an S185 CAN lift 3841 lbs without tipping.
As a side note the tests were completed with a particular set of options, the most notable affecting the capacity being: Deluxe Cab, European Tailgate, and Window Enclosure.