head to head
Neither is simply harder - they are hard in different places. Master of Orion demands more variance; The Elder Scrolls V: Skyrim demands more execution.

Optimization · Pure Optimization
The genre-defining 1993 space 4X of galactic conquest, diplomacy and ship design.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
Master of Orion leans Optimization (Pure Optimization); The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization).
The Elder Scrolls V: Skyrim leans clearly harder on execution.
Master of Orion
Pure turn-based menus
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.
Master of Orion
AI emperors are predictable policy machines
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Master of Orion leans clearly harder on variance.
Master of Orion
Random galaxies and tech trees vary each game
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Master of Orion leans clearly harder on optimization.
Master of Orion
Tech beelines and ship design dominate outcomes
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.