Screen Writers are a Better Investment than Actors

Writers have a much larger influence over movies than actors do. To put this into numbers the top ten writers earned an average of over 161 Million dollars for each of their movies in the box office. At the same time the top ten actors earned a mere 72 million dollar average per movie.

Movies by the Best Writers earn twice 

as much as those by the top actors.

It is true of course that actors have more projects than writers, a lot more, but that shouldn't mean that their movies do more poorly on average especially  given the capital opportunities invested to secure them for a film. In the case of the top ten highest paid actors this investment is often nearly as large as the films promotional budget. In other words actors are valued as much as all pr and advertising, but imagine for a moment a film that did no advertising, showed no trailers, had no critics review it. How well could such a film do no matter who the actor was?

When its easy to see that the numbers don't add up why do these numbers continue?