Robert Warwick and Willard Robertson made 6 films together, and the 5 rated ones average 7.20, 0.36 above their career marks. The best is I Am a Fugitive from a Chain Gang at 8.2.

Robert Warwick averages 6.88, Willard Robertson averages 6.81. Apart that suggests 6.85; together they average 7.20, a lift of +0.36.

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