head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

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

Optimization · Pure Optimization
A touch-controlled DS Zelda about puzzling through dungeons and driving a train across Hyrule.
Fallout: New Vegas leans Optimization (Pure Optimization); The Legend of Zelda: Spirit Tracks 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
The Legend of Zelda: Spirit Tracks
Stylus combat and flute playing are forgiving
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
The Legend of Zelda: Spirit Tracks
Phantoms patrol on fixed rules
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Some loot and crit RNG
The Legend of Zelda: Spirit Tracks
Unknown layouts only until explored
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Legend of Zelda: Spirit Tracks
Rail routing and tower puzzles are the core
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.