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 grappling-hook bullet-hell metroidvania testing precise movement and dodging.
Doom (1993) leans Execution (Pure Mechanics); Rusted Moss 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
Rusted Moss
Grappling-hook movement and bullet-dodging are the lead
Rusted Moss leans a little harder on reads, though the gap is small.
Doom (1993)
Enemies follow scripted patrol and attack patterns, not adaptive
Rusted Moss
Bosses are scripted patterns, 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
Rusted Moss
Bullet patterns are deterministic once learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Doom (1993)
Level routing and resource management determine survival efficiency
Rusted Moss
Upgrade routing and metroidvania traversal 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.