Quote - One of these renders was made using 5 infinite lights.

The other was made using everything what PoserPro 2010 could throw at it. (IDL, tone mapping, etc)

I guess my "Standard Poser lighting skills" must be exceptional then, because, even though I really tried, I can't really see any advantage in those new "features".

And that proves...pretty much nothing actually, other than that by using 5 infinite lights and unmentioned setting on the render, one can get something that looks approximately the same as another render again using unmentioned settings with other stuff.