Hi Shaun,
The prototype was great, the camera movement was very smooth and the character (cube). Personally I believe the Unreal prototype had a smoother looking movement compared to the Unity prototype.
What was it like going from Unity's C# to Unreal Engine's blueprint? Have you explored Unreal Engine's C++ as well? What is the downside or upside to using the blueprint feature?
Personally I believe Unreal Engine's blueprints can look overwhelming at first due to all the nodes and features. What helped me in the past was comparing the blueprints to the nodes in Blender when creating different materials. I know that Unreal Engine documentation is easier to read and find compared to Unity's documentation.
Here is a Youtube video that you might find helpful that explains different variables: