Microsoft's dev team at the Coalition already showed off a Gears 5 Series X build in March of this year, though this revolved around content capped at 60fps. This showed the game's campaign mode nearly reaching parity with the PC version while offering updates to its global illumination model. In the months since, the PC version has apparently adopted some of those illumination tweaks, so like-for-like comparisons show the PC version narrowly beating that of Xbox Series X on a visual basis, primarily due to superior ambient occlusion on the PC version... but, again, that's a PC version jacked up to "ultra" and "maximum" settings while running on an i7-8700K and RTX 3080. For pretty much every other graphical element you can think of (draw distance, shadow resolution, geometric detail), Series X is neck-and-neck.