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 comedy sandbox testing nothing harder than enthusiasm for collateral damage.

Optimization · Light / Casual
An underwater sci-fi horror about consciousness and identity.
Kill It With Fire leans Execution (Light / Casual); SOMA leans Optimization (Light / Casual).
Kill It With Fire leans a little harder on execution, though the gap is small.
Kill It With Fire
Swatting spiders needs only loose aim
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.
Kill It With Fire
Spiders scuttle on simple RNG, no minds here
SOMA
Creatures follow scripts.
Kill It With Fire leans a little harder on variance, though the gap is small.
Kill It With Fire
Spider hiding spots are unknown until flushed out
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.
Kill It With Fire
Checklist objectives and weapon unlocks, deliberately shallow
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.