They are not as popular, and the ones that have been made aren't as good as they could have been. I do not understand what you mean by "knockoff of WoW" though, at least not for offline RPGs. And there are plenty of good japanese RPGs around made in the 10 last years, just not for PS3.

As much as I hate the term "JRPG", I guess you could check out Persona 3 and 4, Radiata Stories, Valkyrie Profile 2.