head to head
Last Epoch asks more than Fallout: New Vegas, and the gap is variance.

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

Optimization · Pure Optimization
An ARPG where build crafting and skill trees define success.
Fallout: New Vegas leans Optimization (Pure Optimization); Last Epoch leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Shooter inputs with VATS assist
Last Epoch
Action combat, modest mechanical demands
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Last Epoch
No adaptive opponents
Last Epoch leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Last Epoch
Loot affixes and crafting outcomes vary
Last Epoch leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Last Epoch
Build planning is the entire game
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.