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

Optimization · Pure Optimization
A mechanical journey adventure solved by understanding the logic of its automaton-filled world.

Optimization · Pure Optimization
The sequel expands the mechanical puzzle boxes into full eerie rooms spanning crypts, ships, and seances.
Syberia leans Optimization (Pure Optimization); The Room Two 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.
Syberia
Walking and clicking; zero reflex demand
The Room Two
Slow tactile fiddling, zero dexterity bar
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Syberia
NPCs follow scripted dialogue trees with no adaptive modelling
The Room Two
No opponent exists
The Room Two leans a little harder on variance, though the gap is small.
Syberia
Linear journey with virtually no hidden-information surprises
The Room Two
Unknown contraptions until explored, then fixed
The Room Two leans a little harder on optimization, though the gap is small.
Syberia
Mechanical clockwork puzzles require mapping part relationships
The Room Two
Fixed mechanical puzzles with single deducible solutions
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.