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 punishing retro platformer where precise jump timing is everything.

Execution · Pure Mechanics
Raw arcade reflexes against accelerating swarms with mild spawn randomness.
Hudson's Adventure Island leans Execution (Pure Mechanics); Millipede 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.
Hudson's Adventure Island
tight platform jumps, brutal timing windows
Millipede
Trackball precision under swarming pressure is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hudson's Adventure Island
fixed enemy patterns, no adaptation
Millipede
Enemies follow fixed movement rules
Millipede leans a little harder on variance, though the gap is small.
Hudson's Adventure Island
fruit/egg drops randomized
Millipede
Spawn waves and DDT timing vary run to run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hudson's Adventure Island
level route and skateboard memorization
Millipede
Mushroom-field management is a thin strategic layer
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.