head to head
Neither is simply harder - they are hard in different places. Portal demands more execution; The Movies demands more variance.

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

Optimization · Pure Optimization
A studio-management economy puzzle dressed up as Hollywood moviemaking.
Portal leans Optimization (Pure Optimization); The Movies leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
The Movies
Menu and drag management, no dexterity test
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 Movies
No adaptive rival studios to outwit
The Movies leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
The Movies
Star moods and script rolls add light randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
Pure puzzle-solving optimization.
The Movies
Studio economy, staffing and timing are the solvable core
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.