head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

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

Execution · Practiced Mastery
Chaotic vehicular destruction testing driving control and map knowledge.
BeamNG.drive leans Execution (Practiced Mastery); Carmageddon: Max Damage leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Soft-body physics car control
Carmageddon: Max Damage
Vehicular mayhem rewards precise ramming and recovery driving
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
Carmageddon: Max Damage
AI rivals follow routines, not your mind
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
Carmageddon: Max Damage
Physics chaos and pickup spawns scramble outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Vehicle tuning, scenario routing
Carmageddon: Max Damage
Knowing maps, shortcuts and wreck-economy wins events
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.