Fornite runs at native 1080p on the PS4 Pro when using the 30 FPS mode while the resolution switches to dynamic 1080p when running at 60 FPS. Xbox One X runs at full 4K in 30 FPS mode and the resolution can drop to dynamic 4K during 60 FPS mode, but it is still leagues above the PS4 Pro version in term of visual fidelity.
As we have already covered the Xbox One X version here, Fortnite is an amazing looking game on the Xbox One X whether you are playing it on 30 FPS or 60 FPS mode. Both hold up really well against the disappointing PS4 Pro version, which seems to be locked to native 1080p and can drop to even lower than that during the dynamic resolution when utilizing the 60 FPS mode. Our pixel count indicates that the resolution is dropped on both the vertical and horizontal axis especially during scenes with a high rendering load.
In the comparison below, Top is the PS4 Pro version while bottom is the Xbox One X version.
If we compare that to the Xbox One X, there is really a huge gulf in term of the resolution that both consoles maintain. This has an obvious impact on the image quality as seen in the comparison above. Keep in mind that the screenshots are not a perfect match due to the dynamic time of day and cloud simulation, but they do give an idea of what to expect on both platforms.
Fortnite is available now for the PS4, Xbox One and PC. The game was developed by Epic Games on their Unreal Engine 4.