Three things to consider, when comparing EK to BA.
1) BA have never bonded anyone for a type rating. So join BA, do a 777, 787, 380 rating. (even a 320 rating!) Then just take that rating elsewhere after 3 months, if you don’t like BA. Can you do that at EK?
2) BA pilots are about to go on strike, because they don’t think management are playing ‘fair’. What’s the ‘remedy’ at EK, should you as an individual, or you as a pilot group have a ‘disagreement’?
3) Full time LH anywhere, these days is on an ever steepening slide to being unsustainable. Part time working does at least offer an opportunity to ameliorate the effects on your life expectancy, whilst maintaining a work/life balance.
But if you think the more money in your pay packet, the happier your life, then just go and live in the desert, or China.
It ain’t rocket science!