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

Optimization · Pure Optimization
Tests physics contraption engineering against fixed puzzle levels.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Bad Piggies leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Bad Piggies
Light steering of contraptions after building
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Bad Piggies
No opponent of any kind
Fallout: New Vegas
Scripted factions and enemies
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Bad Piggies
Levels are fixed and repeatable
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Bad Piggies
Contraption engineering for three-star solutions is the game
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.