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

Optimization · Practiced Mastery
A back-to-basics stealth assassination game built on learnable guard patterns.

Optimization · Pure Optimization
A scripted RPG where pattern-learning and pacifist routing carry you.
Assassin's Creed Mirage leans Optimization (Practiced Mastery); Undertale 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.
Assassin's Creed Mirage
Stealth timing and parkour need modest precision.
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.
Assassin's Creed Mirage
Guard AI fully scripted and mappable.
Undertale
NPCs follow fixed dialogue trees, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Mirage
Patrols and tools mostly deterministic.
Undertale
Minimal randomness in encounters
Undertale leans a little harder on optimization, though the gap is small.
Assassin's Creed Mirage
Infiltration routes and tools reward planning.
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.