head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

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

Execution · Practiced Mastery
Sonic's handheld return to classic 2D form with four playable characters on the Game Boy Advance.
Red Dead Redemption 2 leans Execution (Practiced Mastery); Sonic Advance leans Execution (Practiced Mastery).
Sonic Advance leans a little harder on execution, though the gap is small.
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Sonic Advance
GBA speedrunning lines demand crisp inputs
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.
Sonic Advance
All scripted opposition
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.
Sonic Advance
Special spring spots hidden at first
Sonic Advance leans a little harder on optimization, though the gap is small.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
Sonic Advance
Character routes and emerald hunting are mappable
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.