head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
Modern revival of the Digimon World raising formula with two partners and mapped-but-hidden evolution rules.

Optimization · Pure Optimization
Optimising a strict social calendar and fusion economy against scripted dungeon combat.
Digimon World: Next Order leans Optimization (Pure Optimization); Persona 3 Portable 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.
Digimon World: Next Order
Battles are mostly automated with order timing
Persona 3 Portable
Menu-driven combat needs no physical skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon World: Next Order
No adaptive opposition
Persona 3 Portable
Shadows follow scripted weakness patterns, never adapt
Digimon World: Next Order leans a little harder on variance, though the gap is small.
Digimon World: Next Order
Hidden evolution conditions and lifespan rolls
Persona 3 Portable
Tartarus layouts and fusion results carry randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon World: Next Order
Training schedules and care routines are fully solvable
Persona 3 Portable
Calendar scheduling and persona fusion form a solvable system
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.