Sorry, I meant the sum of White Wolf's RPG properties. In the past I've seen Exalted, for example, listed separately. Without access to their methodology or actual numbers I'm not buying the results, even with a narrow focus on the hobby channel.They do, actually. 2009 4th quarter, World of Darkness, fifth place: ICv2 - Top Q4 2009 Roleplaying Games
I mean, what happens to the Q4 2009 results if, instead of listing FFG twice for games that are both Warhammer 40K, the two are combined? I'm guessing FFG would leapfrog Paizo. What about when you combine Exalted with White Wolf's other lines? The same thing, I'd expect.
Even if we limit ourselves to properties represented in RPGs, companies like Games Workshop, White Wolf and WotC have honest-to-goodness media franchises. They've developed them through video games, novels, comics, etc. Paizo is obviously doing well within their niche, but it's a small niche, and it's their whole business.