head to head
ARK: Survival Ascended asks more than Portal 2, and the gap is reads.

Optimization · Pure Optimization
A dinosaur survival sim where logistics and tame quality beat reflexes.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
ARK: Survival Ascended leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
ARK: Survival Ascended
Combat is clunky; precision rarely decisive.
Portal 2
Portal placement requires some precision but timing is lenient.
ARK: Survival Ascended leans clearly harder on reads.
ARK: Survival Ascended
PvP servers introduce some adaptive human opposition.
Portal 2
No opponent; puzzles are static.
ARK: Survival Ascended leans clearly harder on variance.
ARK: Survival Ascended
Taming and breeding stats randomized.
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
ARK: Survival Ascended
Tame stacking, breeding lines, and base logistics dominate.
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.