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 reflex obstacle-course game about timing jumps and dodges through deadly stages.

Execution · Pure Mechanics
A punishing retro platformer where precise jump timing is everything.
Aztec Challenge leans Execution (Pure Mechanics); Hudson's Adventure Island leans Execution (Pure Mechanics).
Aztec Challenge leans a little harder on execution, though the gap is small.
Aztec Challenge
Reacting to spears, traps and pits with precise timing wins
Hudson's Adventure Island
tight platform jumps, brutal timing windows
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Aztec Challenge
No adaptive opponent in a scripted obstacle gauntlet
Hudson's Adventure Island
fixed enemy patterns, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Aztec Challenge
Some randomness in projectile timing
Hudson's Adventure Island
fruit/egg drops randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Aztec Challenge
Pattern memorisation of each level underneath
Hudson's Adventure Island
level route and skateboard 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.