head to head
Neither is simply harder - they are hard in different places. Portal demands more execution; The Escapists demands more variance.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
Pixel-art prison sim about gaming fixed guard routines and crafting your way out.
Portal leans Optimization (Pure Optimization); The Escapists leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
The Escapists
Light timing for fights and routine windows
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
No adversary modeling player.
The Escapists
Guards follow fixed schedules, not adaptation
The Escapists leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
The Escapists
Desk loot and inmate favours mildly random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
Pure puzzle-solving optimization.
The Escapists
Crafting chains and routine exploitation are the escape
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.