WoW did not have that at WoD launch, they came in later patch. Probably 6.1, as it was around the time I quit.

WoW also uses deferred rendering. I believe it only uses DirectX 10 as well. I'd have to actually boot up and see though... Haven't in forever...

Plus it took them how many years? You *do* have postprocessing options they just don't look great.