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

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.

Optimization · Pure Optimization
A turn-based tactics RPG about exploiting terrain and squad synergies.
The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization); Urtuk: The Desolation leans Optimization (Pure Optimization).
The Elder Scrolls V: Skyrim leans clearly harder on execution.
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Urtuk: The Desolation
Turn-based, so no reflex or aim skill
Urtuk: The Desolation leans a little harder on reads, though the gap is small.
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Urtuk: The Desolation
Enemy AI is scripted, not adaptive to you
Urtuk: The Desolation leans clearly harder on variance.
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Urtuk: The Desolation
Battlefield generation and crit rolls add randomness
Urtuk: The Desolation leans clearly harder on optimization.
The Elder Scrolls V: Skyrim
Skill stacking, enchant loops, and exploits are deeply solvable.
Urtuk: The Desolation
Exploiting terrain, traits and positioning is the entire 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.