head to head
Dysmantle asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
A smash-everything open-world survival game that is really a giant routing and upgrade puzzle.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Dysmantle leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Dysmantle leans a little harder on execution, though the gap is small.
Dysmantle
Dodge-and-whack combat is simple but timing helps.
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.
Dysmantle
Zombie-like enemies follow fixed mappable patterns.
Portal 2
No opponent; puzzles are static.
Dysmantle leans clearly harder on variance.
Dysmantle
Handcrafted world; little meaningful randomness.
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
Dysmantle
Routing the map, tech tree and gear upgrades drive everything.
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.