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

Optimization · Pure Optimization
A calendar-driven JRPG carried by persona fusion and social-link planning.
Ni no Kuni: Wrath of the White Witch leans Optimization (Pure Optimization); Persona 4 Golden leans Optimization (Pure Optimization).
Ni no Kuni: Wrath of the White Witch leans a little harder on execution, though the gap is small.
Ni no Kuni: Wrath of the White Witch
Hybrid action-turn combat, low input demand
Persona 4 Golden
Turn-based, no input demand
Same score on reads - 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
Scripted enemies
Persona 4 Golden
Scripted enemies
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
Persona 4 Golden
Weakness and crit rolls
Persona 4 Golden 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
Persona 4 Golden
Persona fusion and calendar routing rewarded
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.