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

Optimization · Pure Optimization
An immersive sim testing route planning and augmentation builds over raw shooting skill.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Deus Ex: Human Revolution - Director's Cut leans Optimization (Pure Optimization); Fallout: New Vegas 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.
Deus Ex: Human Revolution - Director's Cut
Shooting works but stealth routes bypass most twitch demands
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Deus Ex: Human Revolution - Director's Cut
Guard AI follows mappable patrol scripts, never adapting
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: Human Revolution - Director's Cut
Vents, codes and routes are unknown until explored
Fallout: New Vegas
Some loot and crit RNG
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deus Ex: Human Revolution - Director's Cut
Praxis builds and route planning through levels are the real game
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.