Material Preview: Different Contrast, same exr?

I am using the same exr and configurations in two seperate blend files. One had octane with it, and it must have touched something related to contrast.

This makes no sense to me because its just using the base exr, which has no contrast input in Shading Options, unlike if it were using Render configs

Can happily provide more details if asked specifics

color management the same (under render properties) for both? (view transform, exposure, etc)

Was using Raw/ Filmic in Color Management settings.