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 point-and-click mystery testing deduction and puzzle-solving to solve a case.

Optimization · Pure Optimization
A mechanical journey adventure solved by understanding the logic of its automaton-filled world.
Nancy Drew: Midnight in Salem leans Optimization (Pure Optimization); Syberia leans Optimization (Pure Optimization).
Syberia leans a little harder on execution, though the gap is small.
Nancy Drew: Midnight in Salem
Point-and-click interaction, no twitch demand
Syberia
Walking and clicking; zero reflex demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Nancy Drew: Midnight in Salem
Scripted suspects, no adaptive opponent
Syberia
NPCs follow scripted dialogue trees with no adaptive modelling
Nancy Drew: Midnight in Salem leans a little harder on variance, though the gap is small.
Nancy Drew: Midnight in Salem
Hidden clues revealed by investigation, then mapped
Syberia
Linear journey with virtually no hidden-information surprises
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Nancy Drew: Midnight in Salem
Solving puzzles and assembling clues is the core
Syberia
Mechanical clockwork puzzles require mapping part relationships
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.