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
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
High-speed bike control and combat timing over memorised courses.
Half-Life 2 leans Execution (Pure Mechanics); Road Rash 3 leans Execution (Pure Mechanics).
Road Rash 3 leans a little harder on execution, though the gap is small.
Half-Life 2
Gravity gun and shooting demand precision.
Road Rash 3
High-speed steering plus melee timing against rival riders
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Combine AI scripted, non-adaptive.
Road Rash 3
AI riders follow patterns, not adaptive minds
Road Rash 3 leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Road Rash 3
Traffic and rival behaviour inject mild chaos
Road Rash 3 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Road Rash 3
Bike upgrades and track knowledge compound across the career
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.