head to head
Fallout: New Vegas asks more than Element TD 2, and the gap is execution.

Optimization · Pure Optimization
A tower defense testing optimal tower combinations against scripted waves.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Element TD 2 leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Element TD 2
Light micro on tower placement timing, minimal twitch
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.
Element TD 2
Scripted enemy waves, no adaptive opponent
Fallout: New Vegas
Scripted factions and enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Element TD 2
Wave composition known, little hidden information
Fallout: New Vegas
Some loot and crit RNG
Element TD 2 leans a little harder on optimization, though the gap is small.
Element TD 2
Optimal tower combos and placement IS the game
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.