Attached Link: Render Comparison

<< it was based off of Bryce so the interface is similar.>>

It was RDS ( Ray Dream Studio )
Which had the worst interface ever created. When it got changed to Carrara, ( I think Metacreation still had it at the time ) Everybody loved the simplicity of Bryce's interface, so they integrated the basics of Bryce's interface into it.

I tried to learn RDS years ago, but it made my head hurt form banging it against the wall.
I won Carrara 2 in a art contest about 3 or 4 years ago. Doodle with it for awhile. From what you shown here it looks like they have added a lot to it. It does have a powerful rendering engine, and produces great images. It also has character animation abilities.

Version 2 was a little short on the modeling side. So have they added NURBS, and/or SubD.

Stephen Ray