This video compares the Pro (PSSR2) mode of The Last of Us Part II Remastered to the other graphics mode of the game. All these modes are running on a PlayStation 5 console.
For this comparison, Motion Blur, Camera Shake and Film Grain are all disabled.
You can find the video, with time stamps, below:
0:00 Fidelity vs. Pro (PSSR2)
2:54 Performance vs. Pro (PSSR2)
5:48 Pro (PSSR1) vs. Pro (PSSR2)
Interestingly enough, PSSR2 shows off less details than the other modes if you look closely during the real-time cutscenes. These non-playable scenes use depth of field. Objects that are out of focus look blurrier with PSSR2 than the other modes. This is apparent when you compare the updated PSSR with Fidelity mode.
With that said, objects that are in focus during cutscenes do clearly look the best with PSSR2. It also wins out during actual gameplay as well.