Seems like everyone likes to assume things here and jst run with the thought. CX letters clearly says things would be as per the licenses held and experience. So chill and dont worry about the sim check. The flight grading happens in australia and its on piston aircraft and if a sim check comes in then its for instrument approaches, holdings etc not to fly a 747-200 perfectly with no experience on it at all..they are suppose to train you for that during ur training course if your selected.
And if they are going to grade you on 747-200 sim then i guess all of us would be screwed. By the way thats later why worry about that when you gotta think and work upon the stage 2 in hk