Assassin's Creed Valhalla Appears to Run Better on PS5 Than Xbox Series X

An early comparison of Assassin
An early comparison of Assassin's Creed Valhalla on both PS5 and Xbox Series X implies that the Sony platform is better overall.

Assassin's Creed Valhalla Runs Best On Xbox One; Temporal Reconstruction Confirmed For All Current-Gen Consoles

In Assassin's Creed Valhalla, become Eivor, a legendary Viking raider on a quest for glory. Explore a dynamic and beautiful open world set against the brutal backdrop of England's Dark Ages. Raid your enemies, grow your settlement, and build your political power in the quest to earn a place among the gods in Valhalla. Write your Viking saga Blaze your own path across England with advanced RPG mechanics.

Assassin's Creed: Valhalla - Xbox One/Series x

Assassin's Creed Valhalla' PS5, XSX frame rate hints at a next-gen letdown

Assassin's Creed Valhalla patch adds 60 fps mode for PS5 and Xbox Series X - Polygon

Assassin's Creed Valhalla can run at 60fps on PS5 and Xbox Series X and S with new update - The Verge

As reported by The Verge. Digital Foundry has been analyzing some of the new games across

Assassin's Creed Valhalla – PS4 vs PS5 vs Xbox Series X vs PC Comparison (Load Times/Graphics/ETC)

What is the reason for PS5 hitting 60 fps more often than Xbox Series X in Assassin's Creed Valhalla besides the latter having better specs on paper (I'm not a computer expert)?