head to head
Medieval II: Total War asks more than The Elder Scrolls V: Skyrim, and the gap is optimization.

Optimization · Pure Optimization
Grand strategy wargame mixing turn-based empire play with real-time battles.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
Medieval II: Total War leans Optimization (Pure Optimization); The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization).
The Elder Scrolls V: Skyrim leans a little harder on execution, though the gap is small.
Medieval II: Total War
real-time battle micro is modest
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Medieval II: Total War leans a little harder on reads, though the gap is small.
Medieval II: Total War
campaign AI is exploitable and mappable
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
Medieval II: Total War leans a little harder on variance, though the gap is small.
Medieval II: Total War
fog of war and event triggers hide some state
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Medieval II: Total War leans clearly harder on optimization.
Medieval II: Total War
economy, unit counters, and campaign map strategy dominate
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.