head to head
Dawn of Discovery asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
An economic engine puzzle about balancing production chains across island settlements.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Dawn of Discovery leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans a little harder on execution, though the gap is small.
Dawn of Discovery
Pausable building keeps hands out of the equation
Portal 2
Portal placement requires some precision but timing is lenient.
Dawn of Discovery leans a little harder on reads, though the gap is small.
Dawn of Discovery
AI traders and rivals follow predictable scripts
Portal 2
No opponent; puzzles are static.
Dawn of Discovery leans clearly harder on variance.
Dawn of Discovery
Island fertilities and resources are unknown until scouted
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.
Dawn of Discovery
Production chains and population-tier economics are the entire game
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.