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

Optimization · Pure Optimization
A charming JRPG carried by familiar evolution and party-build routing.

Optimization · Pure Optimization
Open-world detective work testing evidence deduction without hand-holding.
Ni no Kuni: Wrath of the White Witch leans Optimization (Pure Optimization); The Sinking City leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Ni no Kuni: Wrath of the White Witch
Hybrid action-turn combat, low input demand
The Sinking City
Clunky combat is deliberately undemanding
Ni no Kuni: Wrath of the White Witch leans a little harder on reads, though the gap is small.
Ni no Kuni: Wrath of the White Witch
Scripted enemies
The Sinking City
Monsters and citizens follow fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ni no Kuni: Wrath of the White Witch
Familiar catch and drop rolls
The Sinking City
Case clues are hidden information until investigated
Ni no Kuni: Wrath of the White Witch leans a little harder on optimization, though the gap is small.
Ni no Kuni: Wrath of the White Witch
Familiar evolution and party routing rewarded
The Sinking City
Cross-referencing evidence and city archives is the deduction core
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.