A-380 QF Captain. $380,000. 80 hours
A-380 EK Captain. $160,000. 95 hours
A-380 QF SO. $180,000. 80 hours
That's a bit of a simplistic look at it. That $160000 for an EK captain is tax free and doesn't factor in housing, education, medical etc. Not to mention the massive tax bill the QF pilots will have to pay out of that figure.
As you say you also have to factor in the management treatment and living away from home, but on the Qantas side you have to factor in the near zero career progression, and for some the fear of being made redundant.
So for some it will be a no brainer to stay home, and for others it might be very attractive. Not such a simple decision for many.
I wouldn't have thought QF A380 Captains would see EK as attractive from a financial perspective though, but then the grass is ALWAYS greener....