Did you have similar results from using Photoshop?
Yes, very similar.
It's curious certainly. Maybe it's a peculiarity of these particular files as it gets similar results from both packages, or maybe both LR & PS have an issue with the 32bit TIFFs produced ?
However it remains that Enfuse ended up with a better end result in this attempt at going via a true HDR solution for taming the original DR.
Ironically having now spent more time with this particular set of files and taken more time working on them, it's possible to get a better overall result within LR4.3 with just the 0ev image and some serious editing using local adjustments than with any of the HDR solutions.
I do have some extreme DR cases in my library where it requires a proper HDR approach to taming DR, but pv2012 tames the vast majority of previous rejects.
Looking again at HDR options has made me better aware of the huge capabilities of PV2012 and that shooting bracketed sets is probably unnecessary in many(most) cases, or at least it may be better to shoot at +/- 1ev to hit a more optimal exposure to work with, rather than =/-2 to provide an HDR set.
Not everyone's situations will match mine, but I've learnt something from this examination of what I've shot in the past and how it's been processed that I can take forward to future shoots.