The top image looks like it was rendered with the default Poser lights, too.  That can't help matters.  It also has a slight "glow in the dark" look to it.

IMO, neither of them look particularly great but on balance the bottom one is better.

Anyhow, it's most likely a shader problem or your render settings.  Look for BagginsBill and his VSS system.  That should see you right.  OTOH, if you prefer the top image you may not like how VSS looks.

In order for people to help you should post your render settings, a screen cap of the Material Room settings for each image you posted and - most importantly - your Poser version.  Oh, and whatever lights you're using. 

Coppula eam se non posit acceptera jocularum.

My Store

My Gallery