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 colonial-fantasy RPG won by faction routing and build optimization.

Optimization · Pure Optimization
A scripted RPG where pattern-learning and pacifist routing carry you.
Greedfall leans Optimization (Pure Optimization); Undertale leans Optimization (Pure Optimization).
Undertale leans a little harder on execution, though the gap is small.
Greedfall
Lock-on action combat, modest demand
Undertale
Bullet-hell dodging in scripted patterns
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Greedfall
Scripted enemy patterns
Undertale
NPCs follow fixed dialogue trees, not adaptive
Greedfall leans a little harder on variance, though the gap is small.
Greedfall
Loot and check rolls
Undertale
Minimal randomness in encounters
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Greedfall
Faction routing, builds, crafting central
Undertale
Learning fixed boss patterns and mercy routes wins
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.