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
LucasArts adventure retracing the film's hunt for the Holy Grail.

Optimization · Pure Optimization
A mechanical journey adventure solved by understanding the logic of its automaton-filled world.
Indiana Jones and the Last Crusade: The Graphic Adventure leans Optimization (Pure Optimization); Syberia 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.
Indiana Jones and the Last Crusade: The Graphic Adventure
Clicks plus optional simple fisticuffs
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.
Indiana Jones and the Last Crusade: The Graphic Adventure
Guards follow fixed logic
Syberia
NPCs follow scripted dialogue trees with no adaptive modelling
Indiana Jones and the Last Crusade: The Graphic Adventure leans a little harder on variance, though the gap is small.
Indiana Jones and the Last Crusade: The Graphic Adventure
Puzzle answers hidden on first play
Syberia
Linear journey with virtually no hidden-information surprises
Indiana Jones and the Last Crusade: The Graphic Adventure leans a little harder on optimization, though the gap is small.
Indiana Jones and the Last Crusade: The Graphic Adventure
Dialogue routes and Grail-lore deduction
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.