Here is a little compare vray vs corona (here are some difference in lighting because i've changed it for corona renders).
I noticed that Vray lighting is very blurred. For example check shadow on the wall behind SOFA - in corona render there is REAL shadow, in VRAY is blurred. Why? Because IRRADIANCE settings was too low (but still very high : -3, -1). ANd i have to tweak many materials in Vray to remove YELLOW color bleeding from wood (floor) or red EXPEDIT's. In Corona i didn't touch any materials to remove bleeding.. All materials are natural, rendered "as is defined in renderer". Here is version with NO POSTPRODUCIOTN. PURE RENDERS (some furnitures has changed colors in rendering, no in postpro).