head to head
Fallout: New Vegas asks more than Poly Bridge 2, and the gap is execution.

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

Optimization · Pure Optimization
Physics bridge-builder where cheaper, weirder solutions are the real game.
Fallout: New Vegas leans Optimization (Pure Optimization); Poly Bridge 2 leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Poly Bridge 2
Mouse-driven building has no dexterity pressure
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Poly Bridge 2
No adversary present
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Poly Bridge 2
Deterministic physics; outcomes are fully replayable
Poly Bridge 2 leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Poly Bridge 2
Budget-constrained engineering is a pure optimization problem
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.