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
A streamlined immersive sim where biomod builds and route choice outweigh combat skill.

Optimization · Pure Optimization
A free-form fantasy RPG where skill-leveling and spell-craft builds dominate.
Deus Ex: Invisible War leans Optimization (Pure Optimization); The Elder Scrolls IV: Oblivion leans Optimization (Pure Optimization).
Deus Ex: Invisible War leans a little harder on execution, though the gap is small.
Deus Ex: Invisible War
Forgiving FPS combat with stealth options.
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.
Deus Ex: Invisible War
Enemy AI is simple and scripted.
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.
Deus Ex: Invisible War
Level secrets are unknown only on first pass.
The Elder Scrolls IV: Oblivion
Loot and level-scaling rolls
Deus Ex: Invisible War leans a little harder on optimization, though the gap is small.
Deus Ex: Invisible War
Biomod choices and route selection are the deciding layer.
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.