Maximising SC Earn on Partner Flights

[MG1]

What is the booking class with CX? If it is C, D, I, J or P, you should earn 140 SC based on a distance of 5104mi as FJ is also a oneworld airline.

While it is a bit more work to calculate, it is better to use the earn category, partner tables and GCMap to work out expected earn instead of relying on the calculator. The calculator does not factor in the earn category tables, and sometimes contain errors which are unlikely to be honoured by QFF if a flight doesn't credit correctly.

That makes sense, @sudoer - thank you for the information.
The booking class isn't displayed at the outset but may appear if I go further into the booking.
I'll keep in mind what you said.