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

Execution · Pure Mechanics
The NES light-gun classic of shooting ducks and enduring the dog.

Execution · Pure Mechanics
A minimalist endless runner testing precise tap timing.
Duck Hunt leans Execution (Pure Mechanics); Steppy Pants 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.
Duck Hunt
Pure light-gun aim and reaction speed
Steppy Pants
precise tap timing for stepping rhythm
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Duck Hunt
Ducks fly on simple patterns
Steppy Pants
no opponent, solo endless runner
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Duck Hunt
Flight paths vary a little
Steppy Pants
randomized obstacle/terrain generation
Steppy Pants leans a little harder on optimization, though the gap is small.
Duck Hunt
Almost nothing to optimise beyond aim
Steppy Pants
minor route/timing pattern learning
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.