What? Cathay Pacific NEVER operated A340-200, and operated only A340-300.
I agree that Paris - Japan / Korea / Beijing routes are the only routes of Air France flying over extreme area (Siberia), but I don't think this is a reason for Air France to fly both B777-200LR/-300ER and A340-500/-600 if there is GE engine option on A340-500/-600. It costs much less costly to operate only either A330/A340 or B777 instead of both types.
BTW, why you know so much inside things of Cathay Pacific? Do you or anyone you know work for Cathay Pacific? That's great!