head to head
Hitman: Contracts asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
Dark remix of classic Hitman missions built on the same clockwork puzzle stealth.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Hitman: Contracts 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.
Hitman: Contracts
Precise positioning and timed takedowns
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.
Hitman: Contracts
Scripted patrols and fixed reactions only
Portal
No adversary modeling player.
Hitman: Contracts leans clearly harder on variance.
Hitman: Contracts
Unknown layouts and triggers on first attempts
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.
Hitman: Contracts
Route, disguise, and timing solve each mission
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.