An update on the Blu-ray/DVD war.

[NJ5]

Imagine movies A, B and C, all available both on DVD and Blu-Ray.

On a certain week, the top selling movies are:

1- A
2- B
3- C

However, the top selling BR movies are:

1- B
2- A
3- C

And the top selling DVD movies are:

1- A
2- B
3- C

The top movie is either A or B depending on which method you use, and that will affect the market share percentages.