head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Practiced Mastery
Twitch dodging and shooting layered over memorised arcade stage routes.

Execution · Pure Mechanics
A frantic SNES space-western gallery shooter about dodging while you shoot.
Metal Slug leans Execution (Practiced Mastery); Wild Guns leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug
Dodging dense bullet patterns and precise shots carry every credit
Wild Guns
Simultaneous aiming and dodging defines the whole game
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug
Enemies follow fixed arcade scripts, never adapt
Wild Guns
Enemy waves are fully scripted
Wild Guns leans a little harder on variance, though the gap is small.
Metal Slug
Spawns are nearly deterministic once a stage is learned
Wild Guns
Bullet spawns vary slightly until patterns are absorbed
Metal Slug leans a little harder on optimization, though the gap is small.
Metal Slug
One-credit clears come from memorising routes and spawn patterns
Wild Guns
Stage routing and pattern memorization converge for 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.