head to head
Hitman: Contracts asks more than Portal 2, and the gap is variance.

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

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Hitman: Contracts leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Hitman: Contracts leans a little harder on execution, though the gap is small.
Hitman: Contracts
Precise positioning and timed takedowns
Portal 2
Portal placement requires some precision but timing is lenient.
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 2
No opponent; puzzles are static.
Hitman: Contracts leans clearly harder on variance.
Hitman: Contracts
Unknown layouts and triggers on first attempts
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
Hitman: Contracts
Route, disguise, and timing solve each mission
Portal 2
Solving the puzzle's logic IS the entire game.
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.