I thought theOP was trollish when I first read it. I've seen Poser renders that looked very good, almost photorealistic, and it's mostly based on  the quality of the texture or people who really put the work into achieving a high quality render. Besides, as already said, it's ridiculous to suggest that one should get the same results from a $300 program as you do from a $3000 one. But Poser can do far better than the OP has suggested.