Superhero Shows has a great look at the sales for the line of Direct-to-DVD features produced by Marvel and DC.
So far there have been six of each and the graph on the website shows that both lines started out strong, had a slight decline, and then came back with two excellent features (Hulk vs and Public Enemies).
I was quite surprised at how low Wonder Woman dipped, and even more surprised at the low sales for Next Avengers, especially considering that Next Avengers appeared to get more promotion than any of the other Marvel DVDs (except maybe Hulk vs.).
I am not surprised, however, that the DC line has been stronger, as the quality of those programs are generally much higher.
Any of your thoughts on the subject?