Barkley said:

Huh. So XBO X gets a better frame rate but PS4 Pro runs at a slightly higher resolution for some reason.

edit: This explains it:

WoodenPints said: 
- Resolution mode is 1800p checkerboard vs Native 1728p, More foliage on Pro but overall cleaner image on X

In the prefered mode, it ran on avg ~3 fps faster.

But it was missing objects at range, that where drawn on the PS4.
Doesnt feel like your getting much with the Xbox One X, for this game.

 

Will say that the PS4slim > Xbox One S by alot in this game.
Playstation is def. getting a better experiance with MHW than xbox.