head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
An action RPG where narrative depth is paired with moderately solvable combat systems.

Execution · Practiced Mastery
A linear single-player sci-fi shooter sequel built on set-piece missions.
NieR leans Execution (Practiced Mastery); Unreal II: The Awakening leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
NieR
combat timing and dodges matter
Unreal II: The Awakening
Standard aim and movement against scripted foes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NieR
scripted enemies, no adaptation
Unreal II: The Awakening
Linear campaign AI never models you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NieR
loot and encounter randomness
Unreal II: The Awakening
Set-piece surprises only on first play
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NieR
builds and side systems solvable
Unreal II: The Awakening
Weapon selection per encounter is straightforward
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.