Not sure if we are not a bit fanboy-ish here. I mean i agree, Bakker is better than Abercrombie (for my taste). But i am not sure Bakker is so much more literary or pushing boundaries or what-have-you than other top notch fantasy authors. It always depends on what you read into it *...or what you have already read. For some Bakker might be THE thing because they never saw those ideas in other works...but for others it's like "been there, done that"...if you know what i mean.
Case in point - i once stumbled upon a forum where there was some discussion about PoN and there were a lot of posters who thought that the philosophic background and level of PoN was extremely superficial and nothing new at all (those posts were triggered because some posters were gushing how deep and new PoN was

).
* what i mean is this: some deep meanings in books are wholly on you as the reader...other readers do not see it or, often times, i am sure that not even the author thought about it that way (i had a very interesting discussion about that topic with a swiss author once who visited our school...it was very enlightening. All the convoluted stuff some of the students read into the novel just were not there or at least not intended by the author).
Anyway, i guess what i am saying is - we here are heavily biased when it comes to "objectively" (it is in "", guys

) weighing quality between Bakker and Fantasy Author X.