head to head
Operation Flashpoint: Red River asks more than Red Dead Redemption 2, and the gap is optimization.

Execution · Practiced Mastery
Tests deliberate aim and squad-level planning against scripted insurgent encounters.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Operation Flashpoint: Red River leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Operation Flashpoint: Red River leans a little harder on execution, though the gap is small.
Operation Flashpoint: Red River
Authentic ballistics punish sloppy aim and positioning
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Operation Flashpoint: Red River
Insurgent AI is scripted spawns, not an adapting mind
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Operation Flashpoint: Red River leans a little harder on variance, though the gap is small.
Operation Flashpoint: Red River
Enemy placements are unknown until contact
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Operation Flashpoint: Red River leans clearly harder on optimization.
Operation Flashpoint: Red River
Loadouts, class roles and approach planning decide engagements
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.