I'm not arguing that it was in some way a failure; that is a matter of public record. 3.0 was the failure, given its design was screwed-up enough that the only way they could fix it was to release a half-edition.
Most of the ongoing success since then isn't a credit to WotC. WotC was actually a primary source of a lot of 3E's problems; they had poor quality control measures, were constantly fighting with 3PP companies (even going as far as to revise the OGL to try to stop some 3PPs from putting out products), had power creep that still makes people cringe, stopped caring about even producing quality errata and at least twice had to errata their errata before that, and had a lot of other problems.
Pretty much, Paizo had to work with a broken 3E fanbase that was fighting itself and try to forge a product out of an epic mess that was left behind when WotC decided to move on to 4E. At that point, it was no longer in WotC's hands and WotC could not claim any credit for what Paizo did.
So, for WotC, what I said is true; it was one of their editions with a pretty massive failure in it. For Paizo, what I said doesn't apply, since they got it right on their first try.