David Ayer and James Ellroy made 2 films together, averaging 6.70, 0.12 below their career marks. The best is Street Kings at 6.8.

David Ayer averages 6.44, James Ellroy averages 7.20. Apart that suggests 6.82; together they average 6.70, a lift of −0.12.

Lift is the average of their films together minus the mean of their two career averages.