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

Execution · Pure Mechanics
Vehicular twin-stick action testing drive-and-shoot reflexes against scripted swarms.
Red Dead Revolver leans Execution (Practiced Mastery); Renegade Ops leans Execution (Pure Mechanics).
Renegade Ops leans a little harder on execution, though the gap is small.
Red Dead Revolver
Arcade gunplay and duel timing dominate
Renegade Ops
Twin-stick driving and aiming under swarms is the whole test
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
Renegade Ops
Inferno's forces spawn on fixed scripts
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
Renegade Ops
Pickup drops vary slightly between runs
Red Dead Revolver leans a little harder on optimization, though the gap is small.
Red Dead Revolver
Level layouts and duel rhythms are learnable
Renegade Ops
Upgrade trees and routes are quickly settled
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.