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
Arcade-style western shooter built around stage gunfights and showdown duels.

Execution · Practiced Mastery
An open-world racer where vehicle handling across multiple disciplines carries the challenge.
Red Dead Revolver leans Execution (Practiced Mastery); The Crew 2 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.
Red Dead Revolver
Arcade gunplay and duel timing dominate
The Crew 2
precise driving/flying/boating control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Revolver
Enemies are scripted shooting-gallery foes
The Crew 2
AI racers scripted, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Revolver
Minor spawn variation
The Crew 2
weather and traffic add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Revolver
Level layouts and duel rhythms are learnable
The Crew 2
vehicle tuning and routes solvable
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.