Included as a part of the Far Cry 5 Season Pass, and later to be available as stand alone, the quick and dirty remaster of Far Cry 3: Classic Edition has been recently dissected by Youtube channel VGTech. The results are surprising, and suggest that Ubisoft made a point for equality, at least as far as consoles go.
Based on their findings, the remastered game runs at a targeted 30FPS on all console platforms, with frequent drops that are only slightly less so on Xbox One X. As resolution goes, while the vanilla Xbox One and PS4 run the game at 900p and 1080p respectively, both the Xbox One X and PS4 Pro have the game locked at a native 1440p. The only other difference seems to be PS4 Pro using post-process anti-aliasing while the other systems seems to not use anything at all.
Such a lock is rather strange, since there’s no shortage of examples of developers that can give the Xbox One X version of their game that extra push in one way or another over the PS4 Pro version, whether that comes in a resolution, effects or frame rate bump.