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

Optimization · Pure Optimization
Harsh village-builder; balance population, food, and winter.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Banished leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Banished
no mechanical layer
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Banished
no opponent
Fallout: New Vegas
Scripted factions and enemies
Banished leans a little harder on variance, though the gap is small.
Banished
weather, disease events
Fallout: New Vegas
Some loot and crit RNG
Banished leans a little harder on optimization, though the gap is small.
Banished
population ratios and food planning
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.