What exactly are you looking at? For me my eyes get drawn to the truck and the light and shadows cast inside it. That is where RT is kicking in if I am not wrong. Looking at that, there is not much of a difference between your image and his from that point of view.
I mean the main difference between your image and the one he showed is generally brightness of it. Maybe the one he posted has much higher gamma as your image is darker. Not exactly a pro with image analysis but that's what I am seeing.
Really you do not see this? And you be the first to say to
@LtMatt to notice the difference between RT on and off.
Lest bein
Sky detail
Shadow detail in and around the truck is missing.
Shadow detail on the walls under the ledges etc missing
The shadows under the steps missing
The shadow under the truck is missing "It is bright"
The contact shadow on the cross is missing
His pictures on the walls look to be floaty and missing contact hardness
I could go on tbh
Its very clear its more than just brightness missing.
Edit
Do not get me wrong I am not saying my image is better then RT to the point of view of the vehicle but the rest of his image is way off. Maybe its just a calibration issue with his monitor but I would defo get that looked at because his images for both look quite poor.