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
Remake of Gaiden with dual protagonists and explorable dungeons.

Optimization · Pure Optimization
An idle dungeon crawler where you hire bar patrons and script teams to grind dungeons automatically.
Fire Emblem Echoes: Shadows of Valentia leans Optimization (Pure Optimization); Soda Dungeon 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.
Fire Emblem Echoes: Shadows of Valentia
Turn-based menus only
Soda Dungeon
Auto-combat does the fighting for you.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Echoes: Shadows of Valentia
Scripted enemies on both routes
Soda Dungeon
Dungeon monsters follow fixed behavior tables.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Echoes: Shadows of Valentia
Hit RNG plus dungeon encounters
Soda Dungeon
Loot rolls and dungeon events add meaningful luck.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Echoes: Shadows of Valentia
Dual-army routing and class promotions
Soda Dungeon
Team scripts and gear economy decide run depth.
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.