Building comparison
head to head
FactoriovsX4: Foundations
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Factorio
Optimization · Pure Optimization
A factory-engineering sandbox about scaling throughput against your own bottlenecks.
X4: Foundations
Optimization · Pure Optimization
Open-ended space simulation of trading, station-building and faction warfare.
Factorio leans Optimization (Pure Optimization); X4: Foundations leans Optimization (Pure Optimization).
FactorioX4: Foundations
Axis by axis
Execution2 vs 3
X4: Foundations leans a little harder on execution, though the gap is small.
Factorio
Some APM in early hand-crafting; otherwise irrelevant.
X4: Foundations
Flying your own ship matters early, fleets later.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Factorio
Biters follow fixed pollution rules; no adaptive opponent.
X4: Foundations
AI factions follow mappable economic logic.
Variance1 vs 2
X4: Foundations leans a little harder on variance, though the gap is small.
Factorio
Resource patch placement adds minor map randomness.
X4: Foundations
Simulated wars create some unpredictability.
Optimization10 vs 10
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Factorio
Throughput, ratios, and logistics are the entire game.
X4: Foundations
Station logistics and empire economics are a pure engine problem.
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.