head to head
Fallout: New Vegas asks more than Quantum Conundrum, and the gap is variance.

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

Optimization · Pure Optimization
First-person puzzle platformer about flipping physics dimensions mid-jump.
Fallout: New Vegas leans Optimization (Pure Optimization); Quantum Conundrum 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.
Fallout: New Vegas
Shooter inputs with VATS assist
Quantum Conundrum
Mid-air dimension-swap platforming demands real timing
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Quantum Conundrum
No opponent present
Fallout: New Vegas leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Quantum Conundrum
Fully deterministic puzzle rooms
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Quantum Conundrum
Dimension-switch sequences are the solvable core
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.