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

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.

Execution · Practiced Mastery
A 3D platformer about precise gravity-bending jumps through fixed galaxies.
Red Dead Redemption 2 leans Execution (Practiced Mastery); Super Mario Galaxy 2 leans Execution (Practiced Mastery).
Super Mario Galaxy 2 leans clearly harder on execution.
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Super Mario Galaxy 2
Precise jumps and gravity navigation define every galaxy
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Super Mario Galaxy 2
Bosses are scripted patterns, not adapting to you
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Super Mario Galaxy 2
Levels are deterministic, nothing random
Super Mario Galaxy 2 leans clearly harder on optimization.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
Super Mario Galaxy 2
Learning fixed layouts and routes for stars
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.