head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Pure Optimization
A tower defense game about engineering optimal gem combinations against scripted waves.

Optimization · Pure Optimization
A studio-management economy puzzle dressed up as Hollywood moviemaking.
GemCraft leans Optimization (Pure Optimization); The Movies leans Optimization (Pure Optimization).
GemCraft leans a little harder on execution, though the gap is small.
GemCraft
Placing gems and towers has no twitch demand
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.
GemCraft
Monster waves are scripted, never adapting to player
The Movies
No adaptive rival studios to outwit
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
GemCraft
Wave composition is fixed once a level is known
The Movies
Star moods and script rolls add light randomness
GemCraft leans a little harder on optimization, though the gap is small.
GemCraft
Combining gems for optimal tower output is the entire game
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.