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

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
An endless runner testing reflexes dodging obstacles at accelerating speed.
Half-Life 2 leans Execution (Pure Mechanics); Subway Surfers City leans Execution (Pure Mechanics).
Subway Surfers City leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Subway Surfers City
Swiping to dodge obstacles at speed is the whole game
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Subway Surfers City
No opponent; an endless solo runner
Subway Surfers City leans clearly harder on variance.
Half-Life 2
Almost no randomness.
Subway Surfers City
Obstacle patterns are procedurally generated each run
Subway Surfers City leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Subway Surfers City
Upgrade choices and pickup routing improve high scores
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.