I think its all got to do with the handling. I was trying my hands on a POSKY 737-800, for some reason I found the controls too stiff and the plane could not be easily controlled with the keyboard. At the same time, a 737-400 series or 737-200 could be easily controlled and would respond to my keyboard inputs. Jets do have a know problem of power-spooling, which takes around 7 seconds before the power feedback is felt.
as for the Saab, I think controlling it is really easy, The Dornier, does good on controlling, but not as nibble as Saab, Thats where the german scores really more!!