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.

Execution · Light / Casual
A casual licensed action game testing little beyond light co-op coordination.

Optimization · Light / Casual
An underwater sci-fi horror about consciousness and identity.
Harry Potter and the Goblet of Fire leans Execution (Light / Casual); SOMA leans Optimization (Light / Casual).
Harry Potter and the Goblet of Fire leans a little harder on execution, though the gap is small.
Harry Potter and the Goblet of Fire
Simple co-op spell casting with generous timing
SOMA
Light stealth, gentle inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Goblet of Fire
Enemies are fixed waves, no adaptation
SOMA
Creatures follow scripts.
SOMA leans a little harder on variance, though the gap is small.
Harry Potter and the Goblet of Fire
Collectible bean locations are fixed
SOMA
Some hiding spot variation.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Goblet of Fire
Light card collection and spell upgrade choices
SOMA
Few systems to optimize.
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.