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
A mobile-born Deus Ex spin-off that condenses augment builds and route choice into smaller levels.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Deus Ex: The Fall leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans a little harder on execution, though the gap is small.
Deus Ex: The Fall
Mobile-first controls keep mechanical demands low.
Fallout: New Vegas
Shooter inputs with VATS assist
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: The Fall
Scripted enemies in small encounter spaces.
Fallout: New Vegas
Scripted factions and enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: The Fall
Compact levels hide little.
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Deus Ex: The Fall
Augment upgrades and stealth-or-combat routing drive play.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
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.