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
Handheld SMT where smirk RNG stings but fusion planning and weakness knowledge carry you.

Optimization · Pure Optimization
An auto-attacker where picking the right weapon evolutions wins by itself.
Shin Megami Tensei IV 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.
Shin Megami Tensei IV
Menu combat with no execution ceiling.
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.
Shin Megami Tensei IV
Demon negotiation is random personality scripts.
Vampire Survivors
Enemies follow fixed spawn scripts; no adaptive opponent.
Shin Megami Tensei IV leans a little harder on variance, though the gap is small.
Shin Megami Tensei IV
Smirk procs and negotiation RNG swing fights hard.
Vampire Survivors
Level-up offerings and pickup drops are randomized.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Shin Megami Tensei IV
Fusion apps, weakness charts, and builds solve the game.
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.