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
The bigger, faster sequel doubling down on chaotic crash physics and stunt minigames.

Execution · Pure Mechanics
An endless runner testing reflexes dodging obstacles at accelerating speed.
FlatOut 2 leans Execution (Pure Mechanics); Subway Surfers City leans Execution (Pure Mechanics).
Subway Surfers City leans a little harder on execution, though the gap is small.
FlatOut 2
High-speed control amid wrecks and ragdolls
Subway Surfers City
Swiping to dodge obstacles at speed is the whole game
FlatOut 2 leans a little harder on reads, though the gap is small.
FlatOut 2
No adaptive opposition worth modeling
Subway Surfers City
No opponent; an endless solo runner
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FlatOut 2
Crash physics and track debris vary every race
Subway Surfers City
Obstacle patterns are procedurally generated each run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FlatOut 2
Track knowledge and car tuning settle into routine
Subway Surfers City
Upgrade choices and pickup routing improve high scores
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.