Ivor H, I think they're ok with their SSW D.III, as the aircraft recieved design changes to the ailerons (horn-extensions), the rudder (gained an enlarged angular profile), and eventually to the elevator too, all to reduce pilot control forces and improve maneuverability.

These changes all occurred after the prototypes were tested at the first 1918 fighter trials at Adlershof, in which a small production batch of D.IIIs were ordered for front-line evaluation.

The SSW D.IV is quite distinguishable by its high-aspect ratio wings (narrow cord compared to wingspan).

P.S. Just got notice that my pre-ordered copies of WoW have shipped from EB games (dated yesterday)............yeehaaaaaaa! \:D