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.

Optimization · Practiced Mastery
Refined loot shooter with skill-tree builds.

Optimization · Practiced Mastery
Remake of the original Risk of Rain with new survivors and tighter action.
Borderlands 3 leans Optimization (Practiced Mastery); Risk of Rain Returns leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands 3
Tighter gunplay than predecessors
Risk of Rain Returns
Platforming and aiming demand sharper inputs than original.
Borderlands 3 leans a little harder on reads, though the gap is small.
Borderlands 3
Enemies scripted, no adaptive opponent
Risk of Rain Returns
Scripted enemy behaviour throughout.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands 3
Weapon rolls and anointments randomize
Risk of Rain Returns
Random item pool defines builds run to run.
Borderlands 3 leans a little harder on optimization, though the gap is small.
Borderlands 3
Skill trees, anointments, gear math deep
Risk of Rain Returns
Survivor kits and routing reward optimization.
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.