P3D v4 departures at yssy

I was watching traffic movements at sydney airport with 16l/r active and noticed some traffic parked at domestic terminal right next to 16r using 16l for takeoffs mostly dash8 and 737. Then I realised given the location of 16l farther away there should be hardly any AI depart using that runway. The afcad runway setting is similar to default with no tweaking. Does p3d prioritize small aircraft to smaller runways as well for this to happen?