hard to prove--
but perhaps all of us who turned them down at various stages of the process-
(as for myself-after being invited to to a screening-pay my own way---i emailed them that they could contact me when the terms improved),
have helped increase the terms there.
i just could not see strapping on a 747 and going across the oceans for such small pay. regardless of my not being type rated.
if we are carrying that much revenue across the ponds, the flight crew should get a fair percentage of the money changing hands on the ground.
good luck--