head to head
Fallout: New Vegas asks more than 428: Shibuya Scramble, and the gap is execution.

Optimization · Pure Optimization
A live-action visual novel weaving five strangers' stories together across one chaotic day in Shibuya.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
428: Shibuya Scramble leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
428: Shibuya Scramble
Reading and choosing only
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
428: Shibuya Scramble
No opponent, only branching script
Fallout: New Vegas
Scripted factions and enemies
428: Shibuya Scramble leans a little harder on variance, though the gap is small.
428: Shibuya Scramble
Cross-character consequences hidden until triggered
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans clearly harder on optimization.
428: Shibuya Scramble
Mapping timeline interactions to dodge bad endings
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.