head to head
Neither is simply harder - they are hard in different places. Football Manager 26 demands more variance; Portal 2 demands more execution.

Optimization · Pure Optimization
Tests long-horizon squad-building and tactical optimisation against simulation noise.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Football Manager 26 leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Football Manager 26
Menus and team talks need no hands
Portal 2
Portal placement requires some precision but timing is lenient.
Football Manager 26 leans clearly harder on reads.
Football Manager 26
AI managers are mappable; online rivals rare
Portal 2
No opponent; puzzles are static.
Football Manager 26 leans clearly harder on variance.
Football Manager 26
Match engine rolls and injuries swing seasons
Portal 2
Puzzles are deterministic with no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Football Manager 26
Squad building, tactics and finances are a solvable machine
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.