miss matching between vfb and pv

Hello guys,
could you tell me how ever the images between vfb and pv do not appear to be equal to both gamma and contrast levels?
I have the latest version of the dailybuild in R18 and win10

Confirming.
Difference check shows mismatch in PNGs (8bit) & EXRs (32bit). Images were exported from VFB & PV. Tested with GIMP & PS.

Note:
Already reported on mantis under issue #2469