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
Sequencing unit development and tactical fights through a solvable turn-based campaign.

Optimization · Pure Optimization
A turn-based JRPG won by persona fusion and social-link routing.
Disciples III: Reincarnation leans Optimization (Pure Optimization); Persona 3 Reload leans Optimization (Pure Optimization).
Persona 3 Reload leans a little harder on execution, though the gap is small.
Disciples III: Reincarnation
Turn-based combat has no physical component
Persona 3 Reload
Turn-based, low input demand
Disciples III: Reincarnation leans a little harder on reads, though the gap is small.
Disciples III: Reincarnation
Mostly scripted AI; occasional human matches add slim prediction
Persona 3 Reload
Scripted enemies and bosses
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Disciples III: Reincarnation
Map contents and loot are hidden until explored
Persona 3 Reload
Weakness, crit, and fusion rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Disciples III: Reincarnation
Unit upgrade paths and fight sequencing are the solvable core
Persona 3 Reload
Persona fusion and social link routing central
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.