head to head
Party Hard 2 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
Planning stealth kill sequences around shuffled NPC routines.
Fallout: New Vegas leans Optimization (Pure Optimization); Party Hard 2 leans Optimization (Pure Optimization).
Fallout: New Vegas leans a little harder on execution, though the gap is small.
Fallout: New Vegas
Shooter inputs with VATS assist
Party Hard 2
Timing kills matters, but pace is deliberate
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Party Hard 2
Partygoer AI is randomized patterns, not adaptive minds
Party Hard 2 leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Party Hard 2
Level item spawns and NPC routes shuffle per attempt
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Party Hard 2
Sequencing kills, traps and escapes is the actual puzzle
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.