head to head
Neither is simply harder - they are hard in different places. Portal 2 demands more execution; The Lamplighters League demands more variance.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.

Optimization · Pure Optimization
Pulp-adventure turn-based tactics about a squad of misfits fighting occult cults.
Portal 2 leans Optimization (Pure Optimization); The Lamplighters League leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Portal 2
Portal placement requires some precision but timing is lenient.
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 2
No opponent; puzzles are static.
The Lamplighters League
Enemy AI follows fixed behaviors
The Lamplighters League leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
The Lamplighters League
Hit rolls and mission layouts add uncertainty
Portal 2 leans a little harder on optimization, though the gap is small.
Portal 2
Solving the puzzle's logic IS the entire game.
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.