Originally Posted by
Globaliser
The fare has nothing to do with this. You earn Avios according to the booking class in to which that sector has been booked. It is not to do with whether you have bought a J class fare or an I class fare. If the sector is booked in J class, you earn for a sector flown in J class.
The point I wanted to make was that the rationale for higher Avios on a J fare is likely based on it being a more expensive flexible fare which in this case it is not.