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
Painterly turn-based RPG built around interrupting enemies on a shared timeline.

Optimization · Pure Optimization
A tactical RPG spin-off putting the Phantom Thieves into cover-based combat.
Child of Light leans Optimization (Pure Optimization); Persona 5 Tactica 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.
Child of Light
Timeline interrupts need only light timing
Persona 5 Tactica
minimal direct control, cover-based tactics
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Child of Light
Enemy AI is scripted
Persona 5 Tactica
scripted enemy AI, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Child of Light
Minor drop randomness
Persona 5 Tactica
some crit and drop randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Child of Light
Timeline manipulation, oculi crafting, skill trees
Persona 5 Tactica
cover positioning and skill-build mastery
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.