head to head
Fallout: New Vegas asks more than The Dig, 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 LucasArts sci-fi adventure where astronauts stranded on an alien world puzzle out its dead civilization.
Fallout: New Vegas leans Optimization (Pure Optimization); The Dig leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
The Dig
Point-and-click; no reflex demands.
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
The Dig
Alien world is static; companions follow scripts.
The Dig leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
The Dig
Alien machinery's purpose is hidden until experimented with.
Fallout: New Vegas leans clearly harder on optimization.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Dig
Machine puzzles have single fixed solutions to deduce.
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.