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

Optimization · Pure Optimization
A tactical RPG solved through long-horizon build and class planning.

Optimization · Pure Optimization
A refined break-and-boost JRPG won by job and latent-power optimization.
Fire Emblem: Three Houses leans Optimization (Pure Optimization); Octopath Traveler II 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.
Fire Emblem: Three Houses
Menu-driven, no mechanical bar
Octopath Traveler II
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.
Fire Emblem: Three Houses
AI follows fixed aggression rules
Octopath Traveler II
Scripted enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem: Three Houses
Hit rates and crit RNG affect runs
Octopath Traveler II
Hit, crit, and break rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem: Three Houses
Class routing and build planning dominates
Octopath Traveler II
Job, latent power, party routing deeply 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.