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 early snowboarding game testing landing control and trick timing down fixed slopes.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Cool Boarders leans Execution (Pure Mechanics); Half-Life 2 leans Execution (Pure Mechanics).
Cool Boarders leans a little harder on execution, though the gap is small.
Cool Boarders
Balancing landings and timing tricks demands precise control
Half-Life 2
Gravity gun and shooting demand precision.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cool Boarders
No adaptive opponent on the slope
Half-Life 2
Combine AI scripted, non-adaptive.
Cool Boarders leans a little harder on variance, though the gap is small.
Cool Boarders
Course is fixed with little randomness
Half-Life 2
Almost no randomness.
Cool Boarders leans a little harder on optimization, though the gap is small.
Cool Boarders
Learning lines and trick timing for points is the meta
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.