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

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

Optimization · Pure Optimization
Pulp-adventure turn-based tactics about a squad of misfits fighting occult cults.
Portal leans Optimization (Pure Optimization); The Lamplighters League leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
The Lamplighters League
Real-time infiltration is gentle; combat is turn-based
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 Lamplighters League
Enemy AI follows fixed behaviors
The Lamplighters League leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
The Lamplighters League
Hit rolls and mission layouts add uncertainty
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 Lamplighters League
Squad composition, positioning, and ability sequencing decide fights
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.