Aussie
The provident fund is indeed an advantage that EK has over QR but that all depends on what strategy do you choose for them to invest your money.
I know of a case of an almost retiring EK's Captain that during the finantial crisis of 2008 lost more than 400 000$USD of his provident fund.
So even with that benifit you have to be carefull when making your options.
Another thing that I think no one as mentioned is the profit sharing which EK has been making in the last few years and QR never considered!