First impression was way to overcooked, if I'm understanding correctly you're trying to make the rust and the imperfections of the scene pop out but you've way overdone it...
You want your images to still look natural even if you wish to really bring out the detail, here's one of my HDRs as an example:
With a single exposure the image is extremely flat and with little detail, however utilizing HDR I was able to make the fading paint and scratches really 'pop' out and bring out the details,
yet I kept it looking natural.