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My Houdini is on the default values at the moment and the two don't match up render wise(same arnold,same shader, same light).
Download https://github.com/imageworks/OpenColorIO-Configs/
add these line to your houdini.env
OCIO = "C:/Users/XXX/Documents/OpenColorIO/aces_1.0.3/config.ocio"
Cheers