To be honest, Uncharted 4 has much more geometry, higher detailed character models, better lighting and global illumination, much wider areas, better effects and smoke effects, better textures overall, more detailed world and better AI than the latest Modern Warfare 2019, Uncharted 4 is a 2016 game.
Stop kidding yourself. Uncharted 4 is a much more demanding game on PS4 than MW 2019.
Yes MW at times packs more condensed visual awe than Uncharted 4 and that's due to Uncharted 4's open world levels at times.
Uncharted 4 is a 30 FPS game, Modern Warfare is a 60 FPS, and the PC version looks almost identical to the base PS4 version except for higher resolutions and higher FPS and those Nvidia RT shadows, nothing more.