Charles Sinclair and Bill Finger made 4 films together, and the 3 rated ones average 5.00, 0.57 above their career marks. The best is Batman & Bill at 7.2.

Charles Sinclair averages 4.97, Bill Finger averages 3.90. Apart that suggests 4.43; together they average 5.00, a lift of +0.57.

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