head to head
Neither is simply harder - they are hard in different places. Borderlands 2 demands more optimization; Peglin demands more variance.

Optimization · Systems & Chaos
Loot-shooter RPG built on gear chasing.

Variance · Systems & Chaos
A pachinko-physics roguelite where aiming skill meets high-variance orb synergy building.
Borderlands 2 leans Optimization (Systems & Chaos); Peglin leans Variance (Systems & Chaos).
Borderlands 2 leans a little harder on execution, though the gap is small.
Borderlands 2
Aim matters but generous hit feel
Peglin
Launching peggle shots demands physical aiming precision per encounter
Borderlands 2 leans a little harder on reads, though the gap is small.
Borderlands 2
Enemies are scripted loot fodder
Peglin
Enemies telegraph and repeat scripted attacks; no adaptive play
Peglin leans clearly harder on variance.
Borderlands 2
Procedurally generated weapon drops vary
Peglin
Peg board layouts and orb reward pool are highly randomised per run
Borderlands 2 leans clearly harder on optimization.
Borderlands 2
Skill trees and gear math heavily solved
Peglin
Orb synergy building and relic selection reward system knowledge
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.