Building comparison
head to head
AliensvsDOOM (2016)
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Aliens
Execution · Pure Mechanics
Arcade reflexes against memorisable alien swarm patterns built to eat quarters.
DOOM (2016)
Execution · Pure Mechanics
Push-forward arena FPS where movement and aim are the whole game.
Aliens leans Execution (Pure Mechanics); DOOM (2016) leans Execution (Pure Mechanics).
AliensDOOM (2016)
Axis by axis
Execution7 vs 8
DOOM (2016) leans a little harder on execution, though the gap is small.
Aliens
Arcade dodging and shooting under swarm pressure is the test
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Reads0 vs 1
DOOM (2016) leans a little harder on reads, though the gap is small.
Aliens
Xenomorph waves follow scripted arcade patterns
DOOM (2016)
Demons scripted attack patterns.
Variance1 vs 1
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Aliens
Stage layouts and spawns are fixed
DOOM (2016)
Minimal encounter randomness.
Optimization4 vs 5
DOOM (2016) leans a little harder on optimization, though the gap is small.
Aliens
Learning spawn points and weapon pickups carries credit-saving runs
DOOM (2016)
Rune and weapon mod picks meaningful.
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.