Now, to be clear, the game is still several months away from finalizing VR support on either platform so take this all with a hefty grain of salt, but it does look noticeably worse on PSVR as expected. In the far distance the horizon is quite blurry, for example. This wasnt really a fair comparison in terms of visuals (Vive Pro is a premium piece of kit), but its still important to note the differences. Everything is much crisper on PC for sure.
Source: N4G PC Hands-On: No Man's Sky VR Is A World Of Limitless Possibilities – UploadVR