CP and Harlem, you are both right. Unfortunately, the basis for the salary package was set a long time ago when the USD was stronger. Now with the weak USD (with the QAR being pegged to the USD), the package is not so good if you are currently being paid in Euros.
Bear in mind that for the GLEX pilots, you are one of six who is on 24/7 standby, not 1 of 2 or 3 that you might be with the operator that pays a lot of Euros. The legitimate tax free status also helps.
So at the end of the day, it may suit those who are currently being paid in USD and not so for the Euro guys.
However, it would certainly be nice for the package to be reviewed and improved!