Perhaps not as easy a decision as it might seem-
Pay- If it is about the same, but does NOT include housing for FD, factor that in. Say, 150 000DHS/yr for a reasonable Villa, less for an Apartment. What are FD offering for Education?
Upgrade- faster at FD.
Lifestyle- Home every night with FD, but home after a LONG, tiring day. Probably more days off at EK, but also more night away.
If what you mention are the ONLY things that matter, FD might have the edge because of faster upgrade if nothing else-
But there IS more to life...