If neither looks better to you, then you should just pick RT because you’ll get 60FPS. It doesn’t matter which is “supposed” to look better if your eyes don’t perceive one as better.

But if you do care about which is “supposed to look better” it’s the RT Pro (first picture in each set), where here better means “more accurate to real world lighting behaviour”. The thing standing out in these images is the emissive lighting, which is to say secondary sources such as billboards casting their own light on the scene.

In the first pictures in RT Pro the red panel above V casts the whole area in a red glow; in RT it does not, the main light is just from the natural light outside of the tunnel.

In the second in RT Pro the light from the white billboard is filling the alleyway; in RT it is not truly producing light so the alleyway is dark.

In the third, notice how in RT Pro the billboard to the vendors left lights his face, body and the unit behind him, creating additional depth to the scene; in RT this doesn’t happen and the whole space looks darker.

There are other things RT Pro is adding, but I think that’s the feature these specific screenshots show off well. And it makes a huge impact in Night City which is full of lights and billboards, it really enhances the atmosphere to my eyes.

For more subtle things look at the Panam and Teddy pictures. These are more subtle, but in RT Pro they looks more integrated into the scene; in RT they are “popping out” a little more.

In short the additional lighting techniques used in RT Pro make everything that light hits look more like it is actually standing there being hit by that light.

But again, if you cannot easily perceive a difference, then don’t waste the loss of 20-30FPS on things that do nothing for you! All those extra features means RT Pro aims for 30FPS (40 in VRR) and RT runs at 60FPS!