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 · Practiced Mastery
Soft-body physics sandbox driving and crashing.

Execution · Pure Mechanics
The bigger, faster sequel doubling down on chaotic crash physics and stunt minigames.
BeamNG.drive leans Execution (Practiced Mastery); FlatOut 2 leans Execution (Pure Mechanics).
FlatOut 2 leans a little harder on execution, though the gap is small.
BeamNG.drive
Soft-body physics car control
FlatOut 2
High-speed control amid wrecks and ragdolls
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Mostly sandbox, no adaptive opponents
FlatOut 2
No adaptive opposition worth modeling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Emergent crash physics outcomes
FlatOut 2
Crash physics and track debris vary every race
BeamNG.drive leans a little harder on optimization, though the gap is small.
BeamNG.drive
Vehicle tuning, scenario routing
FlatOut 2
Track knowledge and car tuning settle into routine
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.