head to head
Portal asks more than Fez, and the gap is execution.

Optimization · Pure Optimization
A perspective-rotation platformer with a hidden cryptographic layer that rewards patient decoding.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Fez leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Fez
Rotation and platforming needs light precision only
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.
Fez
No opponent; solo exploration puzzle
Portal
No adversary modeling player.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fez
World is fixed and deterministic
Portal
Deterministic chambers; no randomness.
Fez leans a little harder on optimization, though the gap is small.
Fez
Decoding the deep cipher system and spatial cube logic is the core challenge
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.