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 · Practiced Mastery
The 1992 survival-horror pioneer trapping you in a puzzle-filled haunted mansion.

Optimization · Practiced Mastery
Ezio's Renaissance revenge tale of parkour, assassination, and villa-building across Italy.
Alone in the Dark leans Optimization (Practiced Mastery); Assassin's Creed II leans Optimization (Practiced Mastery).
Assassin's Creed II leans a little harder on execution, though the gap is small.
Alone in the Dark
Clunky combat and dodging
Assassin's Creed II
Counter-heavy combat stays forgiving
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Alone in the Dark
Monsters scripted in place
Assassin's Creed II
Guards follow scripts
Alone in the Dark leans a little harder on variance, though the gap is small.
Alone in the Dark
Traps surprise exactly once
Assassin's Creed II
Fixed world and missions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Alone in the Dark
Puzzle solutions and item routes are fixed
Assassin's Creed II
Villa economy and route planning, lightly
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.