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
Building a team and exploiting type-matchup math against scripted trainers.

Optimization · Systems & Chaos
The first Persona, a slow dungeon crawler where random negotiation moods and fusion knowledge rule.
Pokémon LeafGreen Version leans Optimization (Pure Optimization); Revelations: Persona leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon LeafGreen Version
Menu-driven turn battles demand no physical skill
Revelations: Persona
Grid-position menu battles; no dexterity.
Pokémon LeafGreen Version leans a little harder on reads, though the gap is small.
Pokémon LeafGreen Version
Trainers are scripted; link battles are a side mode
Revelations: Persona
Negotiation moods are random scripts, not adaptation.
Revelations: Persona leans a little harder on variance, though the gap is small.
Pokémon LeafGreen Version
Wild encounters, catch rolls and crits add mappable RNG
Revelations: Persona
Mood rolls and harsh encounter RNG dominate early.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon LeafGreen Version
Type matchups and team building are the solvable core
Revelations: Persona
Persona fusion and grid positioning are learnable systems.
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.