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

Optimization · Pure Optimization
Day-job hybrid of relaxed spearfishing dives and nightly sushi-bar management.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Dave the Diver leans Optimization (Pure Optimization); Fallout: New Vegas 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.
Dave the Diver
harpoon aiming and sushi-service minigames
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Dave the Diver
no adaptive opponent
Fallout: New Vegas
Scripted factions and enemies
Dave the Diver leans clearly harder on variance.
Dave the Diver
daily fish spawns and sea changes vary
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Dave the Diver
restaurant economy and gear upgrades drive progress
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.