head to head
Fallout: New Vegas asks more than The Dark Eye: Memoria, and the gap is execution.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.

Optimization · Pure Optimization
Logical item-and-spell puzzle chains inside a fixed two-protagonist fantasy story.
Fallout: New Vegas leans Optimization (Pure Optimization); The Dark Eye: Memoria leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
The Dark Eye: Memoria
Clicking hotspots has no dexterity component
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
The Dark Eye: Memoria
Story beats are authored, nothing adapts to you
The Dark Eye: Memoria leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
The Dark Eye: Memoria
Puzzle solutions are hidden until experimentation reveals them
Fallout: New Vegas leans clearly harder on optimization.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Dark Eye: Memoria
Combining items and spells logically is the entire test
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.