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
Real-time tactics where every mission is a clockwork stealth puzzle to be solved.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Commandos 3: Destination Berlin 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.
Commandos 3: Destination Berlin
Tight click timing chaining distractions and kills
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Commandos 3: Destination Berlin
Guards follow fixed patrol scripts, never adapt
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.
Commandos 3: Destination Berlin
Unknown patrols only until scouted, then fully mapped
Fallout: New Vegas
Some loot and crit RNG
Commandos 3: Destination Berlin leans a little harder on optimization, though the gap is small.
Commandos 3: Destination Berlin
Each mission reduces to a solvable sequence puzzle
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.