head to head
DOOM (2016) asks more than Metal Slug 5, and the gap is optimization.

Execution · Pure Mechanics
Push-forward arena FPS where movement and aim are the whole game.

Execution · Pure Mechanics
A run-and-gun arcade shooter that is almost pure twitch execution.
DOOM (2016) leans Execution (Pure Mechanics); Metal Slug 5 leans Execution (Pure Mechanics).
Metal Slug 5 leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Metal Slug 5
precise dodge/shoot run-and-gun demands
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
Metal Slug 5
enemy waves are fully scripted patterns
Metal Slug 5 leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
Metal Slug 5
minor drop and spawn randomness
DOOM (2016) leans clearly harder on optimization.
DOOM (2016)
Rune and weapon mod picks meaningful.
Metal Slug 5
weapon pickup and route memorization
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.