to be perfectly honest, it is so washed out, I can't even tell what it is.
Everyone has their own interpretation of HDR. Some like subtle, and some like overkill. Either way, without the proper methods, (atleast 3 bracketed shots, good editing software etc.), it's difficult to render an HDR image of either quality. Black and white HDR in my opinion is an art in itself, and only certain scenes call for it...Unfortuneately this scene is probably not the best for HDR in general, let alone a B&W.
I encourage you to keep trying though....stick with color HDR first, and get that down, then toy with other ideas. Maybe invest in an HDR dedicated program like Photomatix (very good program) and most importantly, since I don't believe you can bracket with your camera, use a tripod, and get 3 separate shots at different exposures. Typical HDR exposures are -1, 0, +1. Programs like Photomatix do the hard work for you and merge the 3 images into 1, and allow you to fine tune it to whichever degree you want.