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
The NES light-gun classic of shooting ducks and enduring the dog.

Execution · Pure Mechanics
A swipe-em-up arcade game where slicing accuracy against random fruit spawns is the whole skill.
Duck Hunt leans Execution (Pure Mechanics); Fruit Ninja 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
Fruit Ninja
Swipe accuracy and combo timing
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
Fruit Ninja
No opponent
Fruit Ninja leans a little harder on variance, though the gap is small.
Duck Hunt
Flight paths vary a little
Fruit Ninja
Random fruit and bomb spawns
Fruit Ninja leans a little harder on optimization, though the gap is small.
Duck Hunt
Almost nothing to optimise beyond aim
Fruit Ninja
Combo and crit systems are shallow but real
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.