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.

Optimization · Pure Optimization
Cozy space exploration and base-building sandbox.

Optimization · Pure Optimization
Physics sandbox about engineering medieval siege machines that usually explode beautifully.
Astroneer leans Optimization (Pure Optimization); Besiege leans Optimization (Pure Optimization).
Besiege leans a little harder on execution, though the gap is small.
Astroneer
Light terrain tool inputs
Besiege
Piloting wobbly contraptions takes some hand skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Astroneer
No adaptive opponents
Besiege
Static castles and scripted defenders
Astroneer leans a little harder on variance, though the gap is small.
Astroneer
Planet resource distribution
Besiege
Deterministic physics and fixed objectives
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Astroneer
Base layout, power chains, automation
Besiege
Machine engineering is the whole game
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.