head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Planning optimal squad loadouts and synchronized room entries against scripted enemies.

Optimization · Pure Optimization
A calendar-driven JRPG carried by persona fusion and social-link planning.
Breach & Clear leans Optimization (Pure Optimization); Persona 4 Golden 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.
Breach & Clear
Turn-based orders remove any twitch demand
Persona 4 Golden
Turn-based, no input demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Breach & Clear
Enemy AI follows scripted placements, not adaptation
Persona 4 Golden
Scripted enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Breach & Clear
Enemy positions unknown until breached, then mappable
Persona 4 Golden
Weakness and crit rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Breach & Clear
Squad builds and synchronized entry plans are the game
Persona 4 Golden
Persona fusion and calendar routing rewarded
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.