Too many managers and hangers on...
Jet II
Do you have some data to back this up...?
Employees per aircraft is not an appropriate measure as it often depends on whether ground handling is done by airline staff or outsourced. Don't think that just coz handling is in house, that it is more expensive than outsourcing. Many airlines have been suckered into outsourcing thanks to ground handlers offering loss leader prices for the initial contract and then seeking huge increases in future years to recoup their money - leading to the airline paying more than if it had done the work itself.
Never believe statistics - even when they are right.