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

Optimization · Pure Optimization
A breezy grid-based tactics RPG about building a clan through hundreds of jobs, laws, and missions.

Optimization · Pure Optimization
An auto-attacker where picking the right weapon evolutions wins by itself.
Final Fantasy Tactics A2: Grimoire of the Rift leans Optimization (Pure Optimization); Vampire Survivors leans Optimization (Pure Optimization).
Vampire Survivors leans a little harder on execution, though the gap is small.
Final Fantasy Tactics A2: Grimoire of the Rift
Fully turn-based; zero physical demand.
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.
Final Fantasy Tactics A2: Grimoire of the Rift
Enemy AI is predictable and non-adaptive.
Vampire Survivors
Enemies follow fixed spawn scripts; no adaptive opponent.
Vampire Survivors leans a little harder on variance, though the gap is small.
Final Fantasy Tactics A2: Grimoire of the Rift
Hit rolls, law cards, and loot add modest randomness.
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.
Final Fantasy Tactics A2: Grimoire of the Rift
Job combos, positioning, and clan builds decide everything.
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.