SPEEDBIRD 48
You are quite correct. CX had a fleet of CV880's. And indeed the CV990 was the fastest in normal cruise. Several I have noted earlier have the incorrect information about wing sweep. Boeing 707, L1011 are at 35 degrees. DC-8 (-20 series, the first to go supersonic) is 30 degrees. The Boeing 747 is at 39 degrees. There is no western 45 degree swept wing subsonic airliner in service. And never has been.