head to head
The Elder Scrolls V: Skyrim asks more than Pokémon SoulSilver Version, and the gap is execution.

Optimization · Pure Optimization
Plannable type-matchup progression through two regions of fixed trainers.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
Pokémon SoulSilver 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 SoulSilver Version
Menu-driven battles have no physical component
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Pokémon SoulSilver Version leans a little harder on reads, though the gap is small.
Pokémon SoulSilver Version
Trainer AI is scripted; human battles are an optional sideline
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Pokémon SoulSilver Version leans a little harder on variance, though the gap is small.
Pokémon SoulSilver Version
Catch rates, crits and encounters are bounded randomness
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Pokémon SoulSilver Version leans a little harder on optimization, though the gap is small.
Pokémon SoulSilver Version
Team building against known gyms is fully plannable
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.