head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
Arcade dogfighter about staying airborne amid swarming bullets on pure stick skill.

Execution · Pure Mechanics
Holding clean lines at speed through traffic on memorisable point-to-point roads.
Luftrausers leans Execution (Pure Mechanics); The Need for Speed leans Execution (Pure Mechanics).
Luftrausers leans a little harder on execution, though the gap is small.
Luftrausers
Momentum-based dogfighting demands constant precise control
The Need for Speed
Holding racing lines at speed through traffic is the test
The Need for Speed leans a little harder on reads, though the gap is small.
Luftrausers
Enemy planes follow simple fixed behaviors
The Need for Speed
AI rivals and police follow fixed behaviour
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Luftrausers
Spawn patterns vary slightly
The Need for Speed
Traffic patterns add mild run-to-run noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Luftrausers
Part combos tweak the score game
The Need for Speed
Track knowledge and car choice settle quickly
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.