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.

Execution · Practiced Mastery
A remade survival-action game where resourcefulness against scripted threats defines the challenge.
Assassin's Creed II leans Optimization (Practiced Mastery); The Last of Us Part I leans Execution (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
The Last of Us Part I
stealth-combat needs aim and timing
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
The Last of Us Part I
scripted infected/human AI, no adaptation
The Last of Us Part I leans a little harder on variance, though the gap is small.
Assassin's Creed II
Fixed world and missions
The Last of Us Part I
loot and encounter variation
Assassin's Creed II leans a little harder on optimization, though the gap is small.
Assassin's Creed II
Villa economy and route planning, lightly
The Last of Us Part I
crafting and route planning matter
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.