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

Optimization · Pure Optimization
A free-form fantasy RPG where skill-leveling and spell-craft builds dominate.
Assassin's Creed Rogue leans Optimization (Practiced Mastery); The Elder Scrolls IV: Oblivion leans Optimization (Pure Optimization).
Assassin's Creed Rogue leans a little harder on execution, though the gap is small.
Assassin's Creed Rogue
Forgiving parkour and counter-heavy combat ask little
The Elder Scrolls IV: Oblivion
Real-time swing and block, modest demand
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
The Elder Scrolls IV: Oblivion
Scripted enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Rogue
Some naval weather and patrol noise
The Elder Scrolls IV: Oblivion
Loot and level-scaling rolls
The Elder Scrolls IV: Oblivion leans a little harder on optimization, though the gap is small.
Assassin's Creed Rogue
Ship upgrades, fleet economy, and collectible routing dominate
The Elder Scrolls IV: Oblivion
Skill leveling, spell crafting, exploit-prone builds
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.