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
A swipe-em-up arcade game where slicing accuracy against random fruit spawns is the whole skill.

Execution · Pure Mechanics
A stylus-driven rail shooter testing aim speed against on-rails zombie waves.
Fruit Ninja leans Execution (Pure Mechanics); Touch the Dead 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.
Fruit Ninja
Swipe accuracy and combo timing
Touch the Dead
Fast stylus aiming and reloading at zombies is twitch-core
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fruit Ninja
No opponent
Touch the Dead
Zombies attack on script, nothing to predict
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fruit Ninja
Random fruit and bomb spawns
Touch the Dead
Zombie spawn timing adds light unpredictability
Touch the Dead leans a little harder on optimization, though the gap is small.
Fruit Ninja
Combo and crit systems are shallow but real
Touch the Dead
Weapon choice and target priority reward routine
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.