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

Optimization · Pure Optimization
Type-matchup math and team construction across a scripted Sinnoh campaign.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
Pokémon Pearl Version leans Optimization (Pure Optimization); The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization).
The Elder Scrolls V: Skyrim leans clearly harder on execution.
Pokémon Pearl Version
Menu-driven battles need no dexterity
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Pokémon Pearl Version leans a little harder on reads, though the gap is small.
Pokémon Pearl Version
Gym leaders are scripted; online battles are optional
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Pokémon Pearl Version leans clearly harder on variance.
Pokémon Pearl Version
Encounter tables and battle rolls are mappable RNG
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Pearl Version
Team building and type matchups are the solvable core
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.