able to program a simulator for a gusty crosswind situation it must be accurate otherwise they would not be able to do so.
Just because there is a strong crosswind does not always mean it must be gusty. For the same reason when teaching pilots to land a jet transport (simulator) on an into-wind runway it does not need to be gusty. So if you are training pilots in the simulator how to land in a 35 knot direct crosswind that is all you need to teach the technique. You don't
have to add gusts at all.