head to head
Grounded asks more than Red Dead Redemption 2, and the gap is variance.

Optimization · Practiced Mastery
Fighting and building at insect scale by learning fixed creature patterns and optimising gear choices.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Grounded leans Optimization (Practiced Mastery); Red Dead Redemption 2 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.
Grounded
Bug combat demands precise dodge timing and weapon choice
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.
Grounded
Insect AI is scripted; no adaptive opponent
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Grounded leans clearly harder on variance.
Grounded
Creature spawn and loot drops carry session-level randomness
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Grounded leans clearly harder on optimization.
Grounded
Base placement, gear progression, and creature weaknesses are 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.