You did well, even though you failed to get that look you desired.
IMHO, not all shots fit that grunge HDR style. I've damn-near killed myself trying to get that look but the image wouldn't cooperate.
However, I recently watched Ben Willmore's video and he discussed how he gets that look, which often requires two passes through Photomatix, and sometimes three. Each pass is done with different goals in mind, such as getting detail in one pass, then exaggeration in the next. Finally, he often does some serious edits in Photoshop itself - serious in the way certain areas transform, such as (relatively) massive changes in brightness of an area, or (definitely) massive transformations in color. There's one image of a mask or totem pole, and the image that came out of Photomatix is nowhere near as exaggerated as the final image after Photoshopping.
I really need to find some time to take this new knowledge and apply it to some existing HDR sequences.