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
A cartoonish 2D run-and-gun shooter set amid a mob war.

Execution · Practiced Mastery
Arcade-style western shooter built around stage gunfights and showdown duels.
Guns, Gore and Cannoli 2 leans Execution (Practiced Mastery); Red Dead Revolver 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.
Guns, Gore and Cannoli 2
run-and-gun aiming and dodging skill
Red Dead Revolver
Arcade gunplay and duel timing dominate
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guns, Gore and Cannoli 2
scripted enemy waves, not adaptive
Red Dead Revolver
Enemies are scripted shooting-gallery foes
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Guns, Gore and Cannoli 2
some enemy spawn randomness
Red Dead Revolver
Minor spawn variation
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Guns, Gore and Cannoli 2
weapon and route optimization
Red Dead Revolver
Level layouts and duel rhythms are learnable
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.