The red car paint does look different, but that may have been due to human error on my part. For the most part being able to just plug in the maps and render is fantastic. AAA+++
To achieve the rich red reflection in the car paint material in Vray I had to bump up the red values in the reflection color map as the map was more of a pink than red resulting in a faint red reflection rather than the rich red one seen in SP. The difference in saturation reminds me of the difference between linear and srgb colour space but the map is set to srgb.