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

Optimization · Pure Optimization
A 2D sandbox where preparation and gear tiering carry boss fights.

Optimization · Pure Optimization
A dwarven survival-crafting expedition where managing ore, gear and bases outweighs swordplay.
Terraria leans Optimization (Pure Optimization); The Lord of the Rings: Return to Moria leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Terraria
Boss fights require dodging and aim under pressure.
The Lord of the Rings: Return to Moria
Stamina-based melee needs modest timing and positioning.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Terraria
Bosses use scripted attacks; no adaptation.
The Lord of the Rings: Return to Moria
Orc hordes are scripted spawns, not adaptive minds.
The Lord of the Rings: Return to Moria leans a little harder on variance, though the gap is small.
Terraria
World seeds and loot drops randomized.
The Lord of the Rings: Return to Moria
Procedurally generated mines hide ore, dangers and routes.
Terraria leans a little harder on optimization, though the gap is small.
Terraria
Gear progression and arena prep solve every boss.
The Lord of the Rings: Return to Moria
Base building, gear tiers and resource chains decide survival.
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.