[D] Unreal Engine 5 vs Unity for ML Research

I’m working as part of a research team that is looking into Safe Reinforcement Learning. We are developing an algorithm that we want to deploy on 3D games that our own agents can learn in.
Does anyone have any opinions on the new Unreal Engine 5 for ML research and how that compares to Unity ML?

machinelearning ml research unity unreal engine 5