head to head
Bulletstorm asks more than Red Dead Redemption 2, and the gap is execution.

Execution · Practiced Mastery
An arcade FPS that scores you for killing enemies in the most creative ways possible.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Bulletstorm leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Bulletstorm leans clearly harder on execution.
Bulletstorm
Leash, kick, and shot timing drive skillshot chains
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.
Bulletstorm
Enemies are scripted fodder for your combos
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.
Bulletstorm
Arenas and spawns are fixed and learnable
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Bulletstorm leans clearly harder on optimization.
Bulletstorm
Maximising skillshot score per arena is a solvable puzzle
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.