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 first-person cyberpunk slasher where everything dies in one hit, including you.

Execution · Practiced Mastery
Twitch dodging and shooting layered over memorised arcade stage routes.
Ghostrunner leans Execution (Pure Mechanics); Metal Slug leans Execution (Practiced Mastery).
Ghostrunner leans a little harder on execution, though the gap is small.
Ghostrunner
One-hit-death parkour and slashing demand near-perfect inputs
Metal Slug
Dodging dense bullet patterns and precise shots carry every credit
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ghostrunner
Enemy placements are fixed
Metal Slug
Enemies follow fixed arcade scripts, never adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ghostrunner
Deterministic levels
Metal Slug
Spawns are nearly deterministic once a stage is learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ghostrunner
Route planning and enemy-order solutions define fast clears
Metal Slug
One-credit clears come from memorising routes and spawn patterns
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.