Don't get "performance" mixed up.
They get paid on a different set of performance measurable's. Those measurable's just so happen to contradict the performance measurable's that other employees are interested in.
The management team that hired the personnel currently staffed are fully aware of the performance "achievements" of their cohorts. They are leading in a manner that is best for the B.O.D. that places the company in a manner where they can maximize handouts, subsidies and diversification of contracts. That is a direct conflict of interest in the take home pay of pilots.