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.

Optimization · Practiced Mastery
Zelda-flavored musou about juggling battlefield objectives while mowing hordes.

Execution · Practiced Mastery
A twin-stick survival game testing base-layout economy and sustained horde aim.
Hyrule Warriors leans Optimization (Practiced Mastery); Yet Another Zombie Defense leans Execution (Practiced Mastery).
Yet Another Zombie Defense leans a little harder on execution, though the gap is small.
Hyrule Warriors
Combo strings and weak-point gauge timing
Yet Another Zombie Defense
Twin-stick aim under swelling night hordes carries survival
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hyrule Warriors
Enemy hordes are mindless and scripted
Yet Another Zombie Defense
Zombies beeline mindlessly, never adapting
Yet Another Zombie Defense leans a little harder on variance, though the gap is small.
Hyrule Warriors
Minor drop and mission randomness
Yet Another Zombie Defense
Wave composition varies modestly between runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hyrule Warriors
Keep management, character builds, and map priorities
Yet Another Zombie Defense
Turret placement and barricade economy decide how long you last
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.