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
Magic-as-guns FPS campaign through a war between battlemage legions.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Immortals of Aveum leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Immortals of Aveum leans a little harder on execution, though the gap is small.
Immortals of Aveum
Spell-slinging aim and dodge timing
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.
Immortals of Aveum
Enemy mages run scripted AI
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
Immortals of Aveum
Minor loot randomness
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Immortals of Aveum leans a little harder on optimization, though the gap is small.
Immortals of Aveum
Sigil loadouts and talent-tree choices
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.