Looking at BookScan charts, and seeing a field of manga

At Newsarama, retailer Brian Hibbs provides an exhaustive and eye-opening look at the BookScan report for 2004 (covering book market sales), paying special attention to the gains by manga and the losses by DC and Marvel:

Manga is clearly the category killer. So much so that, were I a publisher, I’d be screaming that BookScan devised a way to separate Manga out from the rest. Nearly 70% of the titles making the BookScan list are Manga! Manga sold (at least, remember all of the caveats) 1.3 million more books in 2004 than 2003.