Eh. I never take the adjustment charts for what they are worth. With all the other royalty schemes involved today, you can't compare a movie like GWTW that had nearly a dozen re-releases and almost no competition with something today which is out in theaters for 3 months, then comes to DVD.
Enjoy Potter for what it is. I am more impressed with the $300m OS which didn't involve China. It could flirt with a billion OS, which would only be the third movie to do so, ever.
Back from the dead, I'm afraid.