PR3 is a different shader. The nodes are grouped in a whole different way, so that you can modify some values of the shader much easier as in PR2. You can change a lot of values without entering the Material room if you use Parmatic.

And, the shader looks better, of course.

A very detailed texture won't replace a good shader system. It's about light being reflected within the skin and changing the color, it's about the shine - and, of course, gamma correction and ao.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.