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.

Optimization · Practiced Mastery
Slingshot trajectory puzzles with randomised bird hands gating consistency.

Optimization · Practiced Mastery
The original loot-driven co-op shooter set on the bandit world of Pandora.
Angry Birds 2 leans Optimization (Practiced Mastery); Borderlands leans Optimization (Practiced Mastery).
Borderlands leans a little harder on execution, though the gap is small.
Angry Birds 2
Trajectory precision on the slingshot matters modestly
Borderlands
Standard FPS aim; numbers matter more than precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Angry Birds 2
Pigs sit in structures, never adapting
Borderlands
Bandits and skags are scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Angry Birds 2
Random bird-card hands and multi-stage levels shuffle each attempt
Borderlands
Procedural loot drops gate your power
Borderlands leans a little harder on optimization, though the gap is small.
Angry Birds 2
Knowing structure weak points and bird matchups is the edge
Borderlands
Builds, gear math, and farming routes dominate
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.