head to head
Fallout: New Vegas asks more than Gratuitous Space Battles, and the gap is execution.

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

Optimization · Pure Optimization
Pre-solving battles through ship design and deployment, then watching the answer play out.
Fallout: New Vegas leans Optimization (Pure Optimization); Gratuitous Space Battles leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Gratuitous Space Battles
Battles run hands-off once deployed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Scripted factions and enemies
Gratuitous Space Battles
Async challenges exist but fleets cannot adapt mid-fight
Gratuitous Space Battles leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Gratuitous Space Battles
Unknown enemy loadouts add pre-battle hidden information
Gratuitous Space Battles leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Gratuitous Space Battles
Ship design and deployment orders decide everything before combat starts
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.