R2D2 - real time rendering VS pre render

Take a look at this R2D2. My challenge was to bridge the gap between pre render and real time rendering rendering quality.
Modeling was done in blender and texture painting was done by substance 3D painter. Then we did real time rendering in UE5 on one side and pre rendering in blender cycles on the other side.
Until now, real time rendering has not been able to match the quality of pre-rendering in Maya, C4D, blender, etc. However, since UE5, the gap is being closed.
The rendering quality of R2D2 lit by Lumen in UE5 is approaching the rendering quality by blender cycles. I wanted to prove that.