They pay their Australian and Hong Kong ground staff the same.
Not even close I am afraid, baggage handlers, transit engineers, check-in staff are on vastly different incomes.
Next time your on transit in HKG ask them how much they get paid a month then ask an Australian baggage handler how much he gets paid. Better still, ask the driver of the tug how much he is paid, then ask the QF tug driver not the Menzies tug driver!
Years of industrial demarcation has created vastly inflated payscales for jobs that don't warrant it.