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 · Practiced Mastery
Ezio's Renaissance revenge tale of parkour, assassination, and villa-building across Italy.

Optimization · Practiced Mastery
A comedic 2D stealth adventure parodying Metal Gear, built on learnable patrols and puzzles.
Assassin's Creed II leans Optimization (Practiced Mastery); UnMetal leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed II
Counter-heavy combat stays forgiving
UnMetal
Light stealth timing and boss dodging
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed II
Guards follow scripts
UnMetal
Guards follow fixed patrol scripts
UnMetal leans a little harder on variance, though the gap is small.
Assassin's Creed II
Fixed world and missions
UnMetal
Some unknown-first-time gags, mapped on replay
UnMetal leans a little harder on optimization, though the gap is small.
Assassin's Creed II
Villa economy and route planning, lightly
UnMetal
Routes, item puzzles, and scripted bosses are solvable
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.