head to head
Fallout: New Vegas asks more than Steins;Gate 0, and the gap is execution.

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

Optimization · Pure Optimization
A darker parallel timeline that rewards players who trace the exact decision chain to its true conclusion.
Fallout: New Vegas leans Optimization (Pure Optimization); Steins;Gate 0 leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Steins;Gate 0
Reading only; no twitch requirement
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Steins;Gate 0
No adaptive adversary in any route
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Steins;Gate 0
Hidden branch conditions drive which ending is reached
Fallout: New Vegas leans clearly harder on optimization.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Steins;Gate 0
Phone and choice routing to reach true ending is a solvable map
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.