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
A Silk Road grind MMORPG whose trader-versus-thief economy sits atop classic build optimization.
Ni no Kuni: Wrath of the White Witch leans Optimization (Pure Optimization); Silkroad Online 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
Silkroad Online
Auto-attack grinding asks little of the hands.
Silkroad Online leans a little harder on reads, though the gap is small.
Ni no Kuni: Wrath of the White Witch
Scripted enemies
Silkroad Online
Trader-thief-hunter PvP triangle adds some human prediction.
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
Silkroad Online
Drops and alchemy enhancement rolls gate gear.
Silkroad Online 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
Silkroad Online
Skill mastery builds and trade route planning are the 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.