head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
Stylish JRPG where phantom thieves steal hearts on a tightly optimized school calendar.

Optimization · Pure Optimization
An auto-attacker where picking the right weapon evolutions wins by itself.
Persona 5 leans Optimization (Pure Optimization); Vampire Survivors 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 5
Stylish menus, not reflexes
Vampire Survivors
Movement is trivial; no aim or precision required.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Persona 5
Palace enemies use fixed weaknesses
Vampire Survivors
Enemies follow fixed spawn scripts; no adaptive opponent.
Vampire Survivors leans a little harder on variance, though the gap is small.
Persona 5
Fusion alerts and negotiation rolls
Vampire Survivors
Level-up offerings and pickup drops are randomized.
Vampire Survivors leans a little harder on optimization, though the gap is small.
Persona 5
Confidant calendar routing and baton-pass weakness chains
Vampire Survivors
Evolution paths and weapon combinations fully solve the run.
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.