Movie Render Graph output does not match same config in MRQ

Title. Output doesn’t match despite exact same settings. In my current example, MRG is darker. What could be causing this? Does anyone have advice on how I can debug? Thanks.

MRG is darker than MRQ? Is that the case with just the default config and default graph as well?

Hi Shaun, this was an error on my part, thanks a lot for your reply.

Would you mind answering this: Movie Render Graph - reference motion blur in 5.4? ?