Hey Alan, the reality between really flying these routes and in FS is obviously not the same, but in saying that FS2002 isnt to bad at re-creating some of the effects and weather/lighting conditions experianced.
Once had a seriously strong headwind on the HKG-SYD flight and it took me around 10 hours and 25 minutes instead of the usual 9 odd hours. Also with a nice tail wind and a hihger cruise speed of mach 0.87 i managed to do the same flight in a little over 8 hours on Flightsim
Not quite the same as flying it in real life but hey, its the next best thing!
Hope your well.