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

Optimization · Pure Optimization
Methodical puzzle-solving through a fixed, story-driven mystery.

Optimization · Pure Optimization
Evidence-gathering and deduction-board logic with no physical or adversarial layer.
Syberia: The World Before leans Optimization (Pure Optimization); The Testament of Sherlock Holmes 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: The World Before
Pointing and clicking demands nothing physical
The Testament of Sherlock Holmes
Pointing and clicking through crime scenes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Syberia: The World Before
No adversary exists
The Testament of Sherlock Holmes
Suspects are written, not adapting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Syberia: The World Before
The mystery is hidden information revealed on rails
The Testament of Sherlock Holmes
Clues are hidden information until uncovered
The Testament of Sherlock Holmes leans a little harder on optimization, though the gap is small.
Syberia: The World Before
Mechanical puzzles each have a single discoverable solution
The Testament of Sherlock Holmes
The deduction board is a solvable logic puzzle
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.