Problem With Render Passes

[pixela]

When I comp the render passes, it doesn't look like the straight render.
I tried testing this both with 32bit exr and 16bit tif images and I am sending the results below. Please disregard the 2.2 auto-gamma on exr that I didn't bother to change that because the compared straight render has the same correction too.

This is how I comped the passes:

Diffuse x VrayRawLighting
+
Diffuse x VrayRawGI
+
VrayReflection
+
VrayRefraction
+
VraySpecular

Exr- Comped Image




Exr- Straight Render


Tiff- Comped Image



Tiff- Straight Render