Chocks: Basic Salary at SV is below Emirates and on the A330, Embraer and 747 you take little more than basic salary home.
Don't forget that Emirates had profit sharing this year, something in the order of 4-6 months salary plus they get per diem, flight pay and productivity. I would think that on average they are not far short of doubling their basic salary. They get a provident fund on top.
I agree if you're on the 777 or the A320 at SV and you chose to work your socks off then you may do marginally better than Emirates. "Leaves them well behind".....This is not a true statement.
The reality is there is collusion between these 4 companies regarding salary budgets and none really over pays compared to another. Within SV though their is significant disparity between fleets making some fleets look over paid and others under paid.