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

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

Execution · Practiced Mastery
An arena twin-stick survival shooter about aim, movement and perk optimization.
Doom (1993) leans Execution (Pure Mechanics); Nation Red leans Execution (Practiced Mastery).
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
Nation Red
Twin-stick aiming and dodging endless zombies is twitch-heavy
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Doom (1993)
Enemies follow scripted patrol and attack patterns, not adaptive
Nation Red
Zombies swarm mindlessly, nothing to predict
Nation Red leans a little harder on variance, though the gap is small.
Doom (1993)
Enemy placement is fixed but unknown on first run through levels
Nation Red
Spawn rushes and perk drops add chaos
Nation Red leans a little harder on optimization, though the gap is small.
Doom (1993)
Level routing and resource management determine survival efficiency
Nation Red
Perk builds and positioning routes extend survival
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.