head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Pure Optimization
The 2002 Total War pairing turn-based medieval empire management with massive real-time battles.

Optimization · Pure Optimization
A lore-faithful MMORPG where trait tree builds and fellowship coordination decide raid performance.
Medieval: Total War leans Optimization (Pure Optimization); The Lord of the Rings Online leans Optimization (Pure Optimization).
The Lord of the Rings Online leans a little harder on execution, though the gap is small.
Medieval: Total War
Real-time battle control rewards quick unit handling
The Lord of the Rings Online
Raid content has limited twitch demand versus action MMOs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Medieval: Total War
Multiplayer battles add human feints; campaign AI is scripted
The Lord of the Rings Online
Mostly PvMP monster play; rarely the main loop
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Medieval: Total War
Battle dice, loyalty and event cards add noise
The Lord of the Rings Online
Loot RNG and deed completion add minor hidden layers
Medieval: Total War leans a little harder on optimization, though the gap is small.
Medieval: Total War
Campaign economy and battlefield doctrine are deeply learnable
The Lord of the Rings Online
Trait trees and fellowship manoeuvres are systematically optimised
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.