head to head
Gumshoe asks more than Half-Life 2, and the gap is execution.

Execution · Pure Mechanics
A light-gun arcade shooter testing fast, accurate aim against waves of hazards.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Gumshoe leans Execution (Pure Mechanics); Half-Life 2 leans Execution (Pure Mechanics).
Gumshoe leans clearly harder on execution.
Gumshoe
Light-gun aiming and fast reflexes decide survival
Half-Life 2
Gravity gun and shooting demand precision.
Half-Life 2 leans a little harder on reads, though the gap is small.
Gumshoe
Enemies follow fixed arcade patterns, no adaptation
Half-Life 2
Combine AI scripted, non-adaptive.
Gumshoe leans a little harder on variance, though the gap is small.
Gumshoe
Diamond placement and enemy spawns add minor chaos
Half-Life 2
Almost no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gumshoe
Learning level layouts gives a modest edge
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.