head to head
Homeworld: Deserts of Kharak asks more than Portal, and the gap is reads.

Optimization · Pure Optimization
Ground-based Homeworld prequel about terrain-driven desert fleet warfare.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Homeworld: Deserts of Kharak leans Optimization (Pure Optimization); Portal 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.
Homeworld: Deserts of Kharak
Dune-line positioning micro under fire
Portal
Portal placement timing modest.
Homeworld: Deserts of Kharak leans clearly harder on reads.
Homeworld: Deserts of Kharak
Human opponents in ranked skirmish
Portal
No adversary modeling player.
Homeworld: Deserts of Kharak leans clearly harder on variance.
Homeworld: Deserts of Kharak
Sensor range hides enemy movements
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Homeworld: Deserts of Kharak
Terrain elevation and carrier economy are the core test
Portal
Pure puzzle-solving optimization.
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.