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 refined break-and-boost JRPG won by job and latent-power optimization.

Optimization · Pure Optimization
A solvable type-matchup system wrapped in collection and light RNG.
Octopath Traveler II leans Optimization (Pure Optimization); Pokémon Blue Version leans Optimization (Pure Optimization).
Octopath Traveler II leans a little harder on execution, though the gap is small.
Octopath Traveler II
Turn-based, no input demand
Pokémon Blue Version
Menu battles have no physical component
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Octopath Traveler II
Scripted enemies
Pokémon Blue Version
Trainer AI is fixed; only link battles add fleeting prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Octopath Traveler II
Hit, crit, and break rolls
Pokémon Blue Version
Encounter rolls, catch rates and crits add mapped randomness
Octopath Traveler II leans a little harder on optimization, though the gap is small.
Octopath Traveler II
Job, latent power, party routing deeply rewarded
Pokémon Blue Version
Type chart and team building make the campaign solvable
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.