head to head
Total Annihilation asks more than Fallout: New Vegas, and the gap is reads.

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

Optimization · Pure Optimization
Resource-grid RTS where metal extractor priority and factory efficiency form the decisive optimization layer.
Fallout: New Vegas leans Optimization (Pure Optimization); Total Annihilation leans Optimization (Pure Optimization).
Total Annihilation leans a little harder on execution, though the gap is small.
Fallout: New Vegas
Shooter inputs with VATS assist
Total Annihilation
Constructor routing and unit grouping require consistent multitasking
Total Annihilation leans clearly harder on reads.
Fallout: New Vegas
Scripted factions and enemies
Total Annihilation
Opponent expansion patterns must be scouted and predicted
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
Total Annihilation
Map metal spots are fixed; very little RNG in unit behavior
Total Annihilation leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Total Annihilation
Metal extractor priority and factory queuing are deeply optimizable
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.