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

Execution · Pure Mechanics
A test of fast, precise shooting and map navigation against scripted but relentless enemies.

Execution · Pure Mechanics
A bullet-hell action-adventure testing dodging and platforming precision through hostile arenas.
Doom (1993) leans Execution (Pure Mechanics); Luna Abyss 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.
Doom (1993)
Precise movement and shooting against relentless enemy pressure
Luna Abyss
Bullet-hell dodging and platforming demand precise inputs
Luna Abyss leans a little harder on reads, though the gap is small.
Doom (1993)
Enemies follow scripted patrol and attack patterns, not adaptive
Luna Abyss
Enemies are scripted, not adapting to you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Doom (1993)
Enemy placement is fixed but unknown on first run through levels
Luna Abyss
Some randomness in bullet patterns and encounters
Doom (1993) leans a little harder on optimization, though the gap is small.
Doom (1993)
Level routing and resource management determine survival efficiency
Luna Abyss
Weapon and movement mastery reward 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.