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 · Grand Arena
Asymmetric sci-fi RTS where tiberium economy management and faction counter-play are the decisive layers.

Optimization · Mind & Math
Tolkien RTS where build orders and army counters decide the war for Middle-earth.
Command & Conquer: Tiberian Sun leans Optimization (Grand Arena); The Lord of the Rings: The Battle for Middle-earth leans Optimization (Mind & Math).
Command & Conquer: Tiberian Sun leans a little harder on execution, though the gap is small.
Command & Conquer: Tiberian Sun
Stealth unit deployment and artillery positioning need precise timing
The Lord of the Rings: The Battle for Middle-earth
Micro and multitasking under real-time pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Tiberian Sun
NOD vs GDI asymmetry means opponent strategy must be predicted
The Lord of the Rings: The Battle for Middle-earth
Multiplayer rewards predicting opponent army choices
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Tiberian Sun
Tiberium field growth and map elevation create meaningful uncertainty
The Lord of the Rings: The Battle for Middle-earth
Scouting hides enemy composition until revealed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Tiberian Sun
Harvester routing and unit counter choices are deeply solvable
The Lord of the Rings: The Battle for Middle-earth
Build orders and counter units are largely 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.
full breakdown
Command & Conquer: Tiberian Sun →
full breakdown
The Lord of the Rings: The Battle for Middle-earth →