head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
An open-world extreme sports game about carving ski, snowboard, and wingsuit lines down the Alps.

Execution · Pure Mechanics
Trick-execution mastery and optimised line routing for combo scores.
Steep leans Execution (Pure Mechanics); Tony Hawk's Project 8 leans Execution (Pure Mechanics).
Tony Hawk's Project 8 leans a little harder on execution, though the gap is small.
Steep
Landing tricks and threading lines at speed is hands-first
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.
Steep
The mountain never adapts to you
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.
Steep
Fixed terrain, deterministic physics
Tony Hawk's Project 8
Levels are fully deterministic
Tony Hawk's Project 8 leans a little harder on optimization, though the gap is small.
Steep
Line choice and trick scoring math reward study
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.