head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
An arcade rail-shooter testing raw reflexes in fast jet combat.

Execution · Pure Mechanics
An early arcade climber demanding tight, repeatable jump execution.
After Burner II leans Execution (Pure Mechanics); Donkey Kong Junior 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.
After Burner II
reflex-heavy dodging and shooting
Donkey Kong Junior
precise vine-climbing and jump timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
After Burner II
scripted enemy waves, not adaptive
Donkey Kong Junior
enemies follow fixed patrol patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
After Burner II
minimal randomness in enemy patterns
Donkey Kong Junior
minor enemy timing variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
After Burner II
little systemic depth beyond memorization
Donkey Kong Junior
minimal route memorization needed
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.