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 test of fast, precise shooting and map navigation against scripted but relentless enemies.

Execution · Pure Mechanics
A fast tube shooter testing reflexes and target prioritization at high speed.
Doom (1993) leans Execution (Pure Mechanics); Tempest 4000 leans Execution (Pure Mechanics).
Tempest 4000 leans a little harder on execution, though the gap is small.
Doom (1993)
Precise movement and shooting against relentless enemy pressure
Tempest 4000
Rapid-fire reflexes and tube movement decide survival
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
Tempest 4000
Enemies follow scripted-random spawns, not adapting
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
Tempest 4000
Enemy spawn patterns add measured chaos
Doom (1993) leans a little harder on optimization, though the gap is small.
Doom (1993)
Level routing and resource management determine survival efficiency
Tempest 4000
Power-up timing and lane prioritization optimize score
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.