I tried to render it again without ambient occlusion and with the light invisible. It have no effect it looks exactly as the image above. However I tried to recreate the scene in 3ds max as best i could, converting the scene 1 to 1 is not easy as it uses some other settings. But I tried to match the camera view as best as I could and added a single photometric point light approximately where it is in Poser scene. This turned out to be quite interesting i think and beyond my technical understanding of how these things works, but hopefully someone with such knowledge or idea can help explain it.

Since these photometric lights works differently than those in Poser, I made the light at 750 cd intensity which will be equal to the 100% intensity in Poser. Also all images are rendered for 4 minutes.

Light intensity of 100%

Light intensity of 50%

Light intensity 10%

Light intensity 1%

I think its pretty clear that the light is much more natural, the reflection seem to match the intensity of the light. So at first I thought that this is a problem with Poser then. But to be honest, it took me quite a long time to get the light looking correctly.

This is a render with the exact same lighting and everything as the 10% intensity image above, Only differences between them is that i turned off Gamma/lut correction in 3ds max, the same option you have in Poser render settings for Firefly, but not for Superfly so I cant test it in Poser.

But if you compare the Poser renders with this image, despite that the lighting works a bit different. They share the same weird hotspot, but also compare the noise between the 10% 3ds max renders without the gamma correction and this one, both of them have rendered for 4 min which can be setup in max. Its really weird that the difference is so severe. Can anyone explain what is going on here? Why does Gamma/Lut correction have such huge impact on render quality in PBRs and is there a way to turn it off for Superfly so I can test it there?