FL
What I meant, but on reflection did not say, is that the poster justified his/her salary by quoting qualifications and I could make a connection to the languages, but not the degree.
Whilst BA may set entry criteria of 2 GCSE equivalents, I imagine (certiris paribus) that someone fluent in languages would be more attractive to hire than someone who is not.
Ergo he/she ended up in a global full service carrier, rather than a loco or a charter operation, with a better salary as a result.
Bit "around the houses", so apologies for not making it clearer.