head to head
The Elder Scrolls V: Skyrim asks more than SteamWorld Build, and the gap is execution.

Optimization · Pure Optimization
Balancing town supply chains against mine logistics in a solvable economy.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
SteamWorld Build leans Optimization (Pure Optimization); The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization).
The Elder Scrolls V: Skyrim leans clearly harder on execution.
SteamWorld Build
Placing buildings has no dexterity component
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
SteamWorld Build
Creature attacks are scripted waves, not an adapting mind
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
SteamWorld Build
Resource layout below ground is unknown until dug
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
SteamWorld Build leans a little harder on optimization, though the gap is small.
SteamWorld Build
Supply chains, citizen needs and mine logistics are the entire test
The Elder Scrolls V: Skyrim
Skill stacking, enchant loops, and exploits are deeply solvable.
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.