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 loud, high-endurance test of accurate crowd control against relentless scripted enemy swarms in open arenas.

Execution · Pure Mechanics
A rail light-gun shooter testing aim and reaction against scripted horrors.
Serious Sam: The First Encounter leans Execution (Pure Mechanics); Silent Hill: The Arcade leans Execution (Pure Mechanics).
Serious Sam: The First Encounter leans a little harder on execution, though the gap is small.
Serious Sam: The First Encounter
Sustained accurate fire against enormous enemy hordes demands constant aim
Silent Hill: The Arcade
Light-gun aiming and reaction speed are core
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Serious Sam: The First Encounter
All enemies are scripted and follow fixed rush patterns
Silent Hill: The Arcade
Enemies appear on fixed rails, not adaptive
Silent Hill: The Arcade leans a little harder on variance, though the gap is small.
Serious Sam: The First Encounter
Enemy placement is consistent across runs; no hidden information
Silent Hill: The Arcade
Some enemy spawn variation adds chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Serious Sam: The First Encounter
Enemy priority and positioning strategy are learnable but shallow
Silent Hill: The Arcade
Learning enemy spawn spots rewards 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.