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
A pure reaction-timing endurance test against accelerating random obstacles.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Chrome Dino leans Execution (Pure Mechanics); Half-Life 2 leans Execution (Pure Mechanics).
Chrome Dino leans a little harder on execution, though the gap is small.
Chrome Dino
Jump and duck timing at accelerating speed is everything
Half-Life 2
Gravity gun and shooting demand precision.
Half-Life 2 leans a little harder on reads, though the gap is small.
Chrome Dino
No opponent, just obstacles
Half-Life 2
Combine AI scripted, non-adaptive.
Chrome Dino leans a little harder on variance, though the gap is small.
Chrome Dino
Obstacle order is random but instantly readable
Half-Life 2
Almost no randomness.
Half-Life 2 leans a little harder on optimization, though the gap is small.
Chrome Dino
Almost nothing to plan beyond reaction discipline
Half-Life 2
Linear progression with no builds.
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.