Originally Posted by
Rambol
The mileage and UXP earning do not differ between DL and AF tickets as mentioned above. These earnings are both determined by the marketing carrier (i.e. flight number), not ticket stock (who you bought the ticket from). If the flights have a DL flight number you won't earn UXP and you will earn miles according to the DL mileage earning table. If AF flight number you will earn 4 miles per EUR spend (+elite bonus) and full UXP.
There are some confusions here between XP and UXP. The 1st sentence above is wrong.
For a FB member (ultimate or not), a DL- or AF-coded ticket will give the same number of XP.
For a FB Ultimate member, a DL-coded ticket will not give any UXP. UXP are earned solely on AFKL-coded tickets.