My experience has shown that airlines tend to compare with only the base airlines at that particular station. The other view management tend to take - if you want that much, go work for them.
Unfortunately our pulling power for salaries falls below that of our pilot collegues. We tend to be more the backroom unsung hero's who keep the airlines on an even level.
Perhaps now is the time for an acceptable industry standard.
Salary wise Ops Controller 19-20k