darjr
I crit!
Even if Ingrams numbers suck the OP does raise a real good question, what does WOTC mean in their court documents by "Core Rule Books"? We assume they mean the PH, DMG, and MM, but if they actually mean pretty much the whole line? Well, that would change the "picture" of WOTC dominance even more drastically than it did when we discovered that WOTC serves no where near "6 Million D&D gamers World Wide".
So if their "Core Books" do include pretty much their entire line, that would put WOTC sales much closer in line with Paizo sales.
So knowing exactly what definition WOTC used in that court document is rather important.
Treebore, come on now. If you read the document it's clear they mean the first three books. They even state that those books were on their third printing. Then they start to talk about phb2.
Did you really just convince yourself that paizo and wotc sales are equivalent? Maybe someday. They certainly do seem to be doing a lot of things right.