head to head
Deus Ex: Human Revolution - Director's Cut asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
An immersive sim testing route planning and augmentation builds over raw shooting skill.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Deus Ex: Human Revolution - Director's Cut leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: Human Revolution - Director's Cut
Shooting works but stealth routes bypass most twitch demands
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: Human Revolution - Director's Cut
Guard AI follows mappable patrol scripts, never adapting
Portal
No adversary modeling player.
Deus Ex: Human Revolution - Director's Cut leans clearly harder on variance.
Deus Ex: Human Revolution - Director's Cut
Vents, codes and routes are unknown until explored
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: Human Revolution - Director's Cut
Praxis builds and route planning through levels are the real game
Portal
Pure puzzle-solving optimization.
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.