head to head
Deus Ex: Human Revolution asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
Choosing augmentation paths and routing through hubs to neutralise scripted opposition with minimal friction.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Deus Ex: Human Revolution leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Deus Ex: Human Revolution leans a little harder on execution, though the gap is small.
Deus Ex: Human Revolution
Combat demands moderate aim; takedowns are execution-gated
Portal
Portal placement timing modest.
Deus Ex: Human Revolution leans a little harder on reads, though the gap is small.
Deus Ex: Human Revolution
Guards use scripted alert states, not player-adaptive logic
Portal
No adversary modeling player.
Deus Ex: Human Revolution leans clearly harder on variance.
Deus Ex: Human Revolution
Enemy positions are static once patrol patterns are learned
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
Augment loadout and approach routing solve each hub optimally
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.