after effects color management and ACES

I've made a test render in C4D using Redshift. The render is stored as an EXR file with ACES-cg as the colorspace.
When I import this render into After Effects and apply FNord's OCIO plugin everything works great.
It's set up according to the instructions on the Redshift site:
https://docs.redshift3d.com/display/RSDOCS/Compositing+with+ACES
The image looks the same as in my C4D renderview. See below:

If I now take this same render and go the route of not letting OCIO do the work but rely on AE's own colormanagement the results are different.

I'm starting with a new project. Set my project settings as following:

I now import the render. It will look washed out as it is not being interpreted correctly yet. AE thinks it's in sRGB by default.

Under Interpret footage I assing the ACES-cg colorspace profile to the render.

I would expect the render that is now interpreted as an ACES-cg render to look the same as in my C4D renderviewer or using the OCIO plugin. Instead it looks like this:

The transfer curve seems to be different as the image is much brighter than what I would expect. The brightest parts are completely blown-out.

Where am I going wrong? Why is there a difference between the two methods? Is there a way using the built in colormanagent to get my render to look the same as it does in my C4D renderview?