head to head
Fallout: New Vegas asks more than Before We Leave, and the gap is execution.

Optimization · Pure Optimization
A nonviolent, cozy city builder about rebuilding civilization across hex-tile islands and planets.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Before We Leave leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Before We Leave
Relaxed pace; no combat or timing pressure.
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Before We Leave
No opponents at all; space whales are scripted hazards.
Fallout: New Vegas
Scripted factions and enemies
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Before We Leave
Hex planet layouts vary slightly between runs.
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.
Before We Leave
Supply chains across hex islands and planets are the entire test.
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.