head to head
Fallout: New Vegas asks more than Minecraft: Java Edition, and the gap is execution.

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

Optimization · Pure Optimization
An open sandbox where mastering crafting and building systems dominates over any physical skill.
Fallout: New Vegas leans Optimization (Pure Optimization); Minecraft: Java Edition leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Minecraft: Java Edition
barely relevant, building/PvP negligible for most
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Minecraft: Java Edition
no adaptive opponent, sandbox play
Minecraft: Java Edition leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Minecraft: Java Edition
world gen and mob spawns randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Minecraft: Java Edition
redstone, base/resource routing solvable systems
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.