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

Execution · Practiced Mastery
Dodging scripted bullet patterns while solving each fight's pacifist logic.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.
Deltarune leans Execution (Practiced Mastery); Red Dead Redemption 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.
Deltarune
Bullet-hell dodging in battles demands real reflexes
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
Red Dead Redemption leans a little harder on reads, though the gap is small.
Deltarune
Enemy patterns are charming but fully scripted
Red Dead Redemption
Multiplayer skirmishes add light human prediction
Red Dead Redemption leans a little harder on variance, though the gap is small.
Deltarune
Encounters and secrets are fixed once known
Red Dead Redemption
Ambient events and spawns vary mildly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deltarune
ACT routes, sparing logic and TP economy are solvable
Red Dead Redemption
Mission approaches and economy are learnable
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.