The PS5 version will be enhanced version of the PS4 Pro version via the day 1 patch
So it will run and look better on the PS5 vs. the PS4 Pro
It should look close enough to the PC version
The ray tracing is what is making the difference so if you can't play w/out the beautiful ray tracing we saw in the GIF then get the PC version
If the PC version had no ray tracing the PS5 vs. PC version would be negligible in difference IMO
There is no PS5 version at launch, which will be what the upgrade coming at some point will be. The game will be only BC mode on the PS5, with improvements in loading and frame rates only, if that. You have to wait for that upgrade to have a "next gen" experience, but i still do not think it will be comparable to the experience of a high end PC at launch.