head to head
Neither is simply harder - they are hard in different places. Fallout: New Vegas demands more execution; The Hundred Line: Last Defense Academy demands more variance.

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

Optimization · Pure Optimization
Tactical action-point puzzles threaded through a branching hidden-truth narrative.
Fallout: New Vegas leans Optimization (Pure Optimization); The Hundred Line: Last Defense Academy leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
The Hundred Line: Last Defense Academy
Turn-based tactics and reading require no dexterity
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
The Hundred Line: Last Defense Academy
Monsters and classmates follow authored scripts
The Hundred Line: Last Defense Academy leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
The Hundred Line: Last Defense Academy
Route branches and story twists are hidden information to uncover
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Hundred Line: Last Defense Academy
Action-point puzzles and route planning are the solvable spine
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.