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

Execution · Practiced Mastery
A character action RPG built on tight parry timing against elaborate scripted bosses.

Execution · Practiced Mastery
A story-driven skateboarding game still won by trick execution.
Stellar Blade leans Execution (Practiced Mastery); Tony Hawk's Underground leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Stellar Blade
Parry and perfect-dodge timing windows define the ceiling
Tony Hawk's Underground
Combos plus off-board tricks keep the input ceiling high
Stellar Blade leans a little harder on reads, though the gap is small.
Stellar Blade
Bosses run fixed movesets, learnable not adaptive
Tony Hawk's Underground
Story missions are scripted, not adaptive
Stellar Blade leans a little harder on variance, though the gap is small.
Stellar Blade
Encounters and loot are static and predictable
Tony Hawk's Underground
Fixed levels and mission scripts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Stellar Blade
Exospine builds, gear and moveset study reward preparation
Tony Hawk's Underground
Mission and score-line routing remain solvable
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.