head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.

Execution · Pure Mechanics
Trick-execution mastery and optimised line routing for combo scores.
Super Mario Odyssey leans Execution (Pure Mechanics); Tony Hawk's Project 8 leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Tony Hawk's Project 8
Combo stringing, balance meters and Nail-the-Trick demand trained hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
No adaptive opponents whatsoever.
Tony Hawk's Project 8
Solo score runs against static environments
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
Almost no randomness in level design.
Tony Hawk's Project 8
Levels are fully deterministic
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
Moon routes and movement tech learnable.
Tony Hawk's Project 8
Line routing for maximum combo score rewards study
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.