head to head
Wildcat Gun Machine asks more than Half-Life 2, and the gap is variance.

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

Execution · Pure Mechanics
A twin-stick bullet-hell dungeon crawler testing dodging and aim.
Half-Life 2 leans Execution (Pure Mechanics); Wildcat Gun Machine leans Execution (Pure Mechanics).
Wildcat Gun Machine leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Wildcat Gun Machine
Dodging dense bullet patterns and aiming carries every room
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.
Wildcat Gun Machine
Enemies are scripted bullet-hell, not adaptive
Wildcat Gun Machine leans clearly harder on variance.
Half-Life 2
Almost no randomness.
Wildcat Gun Machine
Procedural dungeon layouts and drops add randomness
Wildcat Gun Machine leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Wildcat Gun Machine
Weapon and key-card choices reward modest planning
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.