head to head
Gradius V asks more than Red Dead Redemption 2, and the gap is optimization.

Optimization · Practiced Mastery
A formation-based horizontal shmup where managing your options configuration and memorising scripted enemy patterns is the game.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Gradius V leans Optimization (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Gradius V leans clearly harder on execution.
Gradius V
Maintaining power-up state through dense formation fire demands precision
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Gradius V
All enemy patterns are scripted Konami-classic formations
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gradius V
Minimal; stages are nearly deterministic
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Gradius V leans clearly harder on optimization.
Gradius V
Options configuration, power-up sequencing, and checkpoint recovery are fully solvable
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.