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 break-and-boost JRPG carried by job-routing and party-composition planning.

Optimization · Pure Optimization
Open-area SMT where essence customization and Press Turn mastery turn demons into solvable math.
Octopath Traveler leans Optimization (Pure Optimization); Shin Megami Tensei V 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.
Octopath Traveler
Turn-based, no input demand
Shin Megami Tensei V
Open-field exploration, but combat is pure menus.
Octopath Traveler leans a little harder on reads, though the gap is small.
Octopath Traveler
Scripted enemies
Shin Megami Tensei V
Magatsuhi and bosses are scripted patterns.
Shin Megami Tensei V leans a little harder on variance, though the gap is small.
Octopath Traveler
Hit, crit, and break rolls
Shin Megami Tensei V
Crit and negotiation RNG add manageable noise.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Octopath Traveler
Job, break-boost, party routing deeply rewarded
Shin Megami Tensei V
Essence fusion and Press Turn builds reward perfect planning.
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.