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
An oriental-fantasy grind MMORPG where upgrade luck and farming efficiency define progress.

Optimization · Pure Optimization
A charming JRPG carried by familiar evolution and party-build routing.
Metin2 leans Optimization (Pure Optimization); Ni no Kuni: Wrath of the White Witch 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.
Metin2
Hack-and-slash grinding with simple inputs.
Ni no Kuni: Wrath of the White Witch
Hybrid action-turn combat, low input demand
Metin2 leans a little harder on reads, though the gap is small.
Metin2
Kingdom wars add light player-versus-player conflict.
Ni no Kuni: Wrath of the White Witch
Scripted enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metin2
Upgrade chance rolls dominate gear progression.
Ni no Kuni: Wrath of the White Witch
Familiar catch and drop rolls
Metin2 leans a little harder on optimization, though the gap is small.
Metin2
Farming spots, alchemy, and stat builds are solvable grind.
Ni no Kuni: Wrath of the White Witch
Familiar evolution and party 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.