Willard Robertson and Sam McDaniel made 4 films together, averaging 6.18, 0.62 below their career marks. The best is Union Pacific at 7.0.

Willard Robertson averages 6.81, Sam McDaniel averages 6.78. Apart that suggests 6.80; together they average 6.18, a lift of −0.62.

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