CMB: The reason FO's got double is because when creating the NEC, eJ cut out all loyalty pay for FO's, thus making the entire bonus performance related.
The FO's got 9.2% (pro-rated) whereas an eJ captain with 2-4 years got 9.6% including loyalty pay, 5-9 years got 14.6% and 10 years or over got 19.6%!
The FO's didn't get more...quite the opposite in fact. I hope this helps.