head to head
Portal asks more than The Sims 4, and the gap is execution.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
A life simulator where planning schedules and needs against a solvable system is the real game.
Portal leans Optimization (Pure Optimization); The Sims 4 leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
The Sims 4
no physical skill ceiling at all
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
No adversary modeling player.
The Sims 4
no opponents, simulated NPCs only
The Sims 4 leans a little harder on variance, though the gap is small.
Portal
Deterministic chambers; no randomness.
The Sims 4
minor random events and needs decay
Portal leans clearly harder on optimization.
Portal
Pure puzzle-solving optimization.
The Sims 4
life and career system optimization dominant
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.