head to head
Fallout: New Vegas asks more than The Blackwell Legacy, 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 supernatural mystery adventure pairing a reluctant medium with a wisecracking ghost.
Fallout: New Vegas leans Optimization (Pure Optimization); The Blackwell Legacy leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
The Blackwell Legacy
Pure conversation and clicking
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
The Blackwell Legacy
No adaptive opponent
The Blackwell Legacy leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
The Blackwell Legacy
Clue connections unknown on first pass only
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Blackwell Legacy
Fixed investigation chain; fully solvable with notes
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.