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
A dungeon-crawler RPG testing party building, skill optimization and careful mapping.

Optimization · Pure Optimization
The poppy direct sequel to FFX where Yuna's trio swaps job dresspheres mid-battle across Spira.
Etrian Odyssey V: Beyond the Myth leans Optimization (Pure Optimization); Final Fantasy X-2 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.
Etrian Odyssey V: Beyond the Myth
Turn-based combat needs no twitch
Final Fantasy X-2
Active Time Battle rewards quick menuing slightly.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Etrian Odyssey V: Beyond the Myth
Enemies scripted, no adaptive opponent
Final Fantasy X-2
All enemies follow scripted AI routines.
Etrian Odyssey V: Beyond the Myth leans a little harder on variance, though the gap is small.
Etrian Odyssey V: Beyond the Myth
Random encounters and FOE patterns partly unknown
Final Fantasy X-2
Drop rates and unknown encounters until mapped.
Etrian Odyssey V: Beyond the Myth leans a little harder on optimization, though the gap is small.
Etrian Odyssey V: Beyond the Myth
Class building, skill trees, and mapping drive everything
Final Fantasy X-2
Dressphere builds, garment grids, and completion routing dominate.
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.