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

Optimization · Practiced Mastery
Solving fixed gravity-manipulation puzzles with light physics platforming.
Assassin's Creed II leans Optimization (Practiced Mastery); Rochard 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
Rochard
Light platforming and aimed throws, rarely demanding
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
Rochard
Guards follow simple scripts, never adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed II
Fixed world and missions
Rochard
Puzzle rooms are fixed and visible
Rochard leans a little harder on optimization, though the gap is small.
Assassin's Creed II
Villa economy and route planning, lightly
Rochard
Gravity-manipulation puzzles each have a findable solution
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.