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 · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.

Optimization · Pure Optimization
Pure stealth game about reading light and sound to ghost through guarded mansions unseen.
The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization); Thief: Deadly Shadows leans Optimization (Pure Optimization).
Thief: Deadly Shadows leans a little harder on execution, though the gap is small.
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Thief: Deadly Shadows
Quiet movement and timing windows need care, not twitch
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Thief: Deadly Shadows
Guards follow scripted patrols and alert states
Thief: Deadly Shadows leans a little harder on variance, though the gap is small.
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Thief: Deadly Shadows
Unknown layouts hide loot until first playthrough
Thief: Deadly Shadows leans a little harder on optimization, though the gap is small.
The Elder Scrolls V: Skyrim
Skill stacking, enchant loops, and exploits are deeply solvable.
Thief: Deadly Shadows
Light, sound, and route mastery makes ghosting 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.