head to head
Fallout: New Vegas asks more than Comet Crash 2: The Kronkoid Wars, and the gap is execution.

Optimization · Pure Optimization
A tower-defense-style strategy game defending against alien comet invasions.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Comet Crash 2: The Kronkoid Wars leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Comet Crash 2: The Kronkoid Wars
minimal direct control, mostly tactical placement
Fallout: New Vegas
Shooter inputs with VATS assist
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Comet Crash 2: The Kronkoid Wars
limited AI opponent adaptation
Fallout: New Vegas
Scripted factions and enemies
Comet Crash 2: The Kronkoid Wars leans a little harder on variance, though the gap is small.
Comet Crash 2: The Kronkoid Wars
randomized comet and enemy spawns
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans clearly harder on optimization.
Comet Crash 2: The Kronkoid Wars
tower/unit placement strategy optimization
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.