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 calendar-driven JRPG carried by persona fusion and social-link planning.

Optimization · Pure Optimization
Team-building and type-matchup optimization, with RNG layers and optional human prediction online.
Persona 4 Golden leans Optimization (Pure Optimization); Pokémon White Version 2 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.
Persona 4 Golden
Turn-based, no input demand
Pokémon White Version 2
Turn-based menus remove any physical ceiling
Pokémon White Version 2 leans a little harder on reads, though the gap is small.
Persona 4 Golden
Scripted enemies
Pokémon White Version 2
Optional human PvP adds prediction; campaign AI is scripted
Pokémon White Version 2 leans a little harder on variance, though the gap is small.
Persona 4 Golden
Weakness and crit rolls
Pokémon White Version 2
Encounter rolls, catches and damage ranges shape runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Persona 4 Golden
Persona fusion and calendar routing rewarded
Pokémon White Version 2
Type matchups, EV training and team building are solvable math
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.