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

Optimization · Pure Optimization
A noir puzzle journey through the Land of the Dead solved by untangling the game's own surreal logic.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Grim Fandango leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Grim Fandango
Tank controls are awkward but never a skill test
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.
Grim Fandango
All characters follow scripted arcs; nothing adapts to the player
Portal 2
No opponent; puzzles are static.
Grim Fandango leans clearly harder on variance.
Grim Fandango
A few timed sequences add minor uncertainty but nothing critical
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
Grim Fandango
Surreal multi-act puzzle chains demand patient causal reasoning
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.