Interestingly enough there doesn't seem to be much of an additional HDR effect in your post process. It just looks like the entire image is a bit brighter. Take a look at the attached for comparison which is just the picture downloaded here with a simple curve applied.
/EDIT: It appears yours is a bit more saturated. Was that part of the HDR tool or did you saturate as well?
/EDIT2: Never mind I my mistake. When I screenshotted photoshop it applied the wrong monitor profile, the saturation actually looks spot on when converted to the right profile.
