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 · Light / Casual
An underwater sci-fi horror about consciousness and identity.

Execution · Light / Casual
A puzzle horror game about learning trap solutions through trial and error.
SOMA leans Optimization (Light / Casual); The Witch's House MV leans Execution (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
SOMA
Light stealth, gentle inputs.
The Witch's House MV
occasional quick reactions to avoid death traps
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
SOMA
Creatures follow scripts.
The Witch's House MV
no adaptive opponent, puzzle-driven horror
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
SOMA
Some hiding spot variation.
The Witch's House MV
some trial-and-error trap randomness
SOMA leans a little harder on optimization, though the gap is small.
SOMA
Few systems to optimize.
The Witch's House MV
learning correct puzzle 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.