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
An open-world stealth-action game where a turncoat assassin hunts his old brotherhood across the North Atlantic.

Optimization · Practiced Mastery
The sequel adds minion mounts and an evil empire to corral with your goblin hordes.
Assassin's Creed Rogue leans Optimization (Practiced Mastery); Overlord II 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 Rogue
Forgiving parkour and counter-heavy combat ask little
Overlord II
Minion sweeps plus mounts need moderate control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Rogue
Stalker assassins ambush by script, not adaptation
Overlord II
Scripted empire enemies
Assassin's Creed Rogue leans a little harder on variance, though the gap is small.
Assassin's Creed Rogue
Some naval weather and patrol noise
Overlord II
Deterministic encounters
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Rogue
Ship upgrades, fleet economy, and collectible routing dominate
Overlord II
Minion management and domination choices 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.