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
The original loot-driven co-op shooter set on the bandit world of Pandora.

Optimization · Pure Optimization
An open-world Caribbean sandbox of ship duels, sword fights, trading, and treasure hunting.
Borderlands leans Optimization (Practiced Mastery); Sid Meier's Pirates! leans Optimization (Pure Optimization).
Borderlands leans a little harder on execution, though the gap is small.
Borderlands
Standard FPS aim; numbers matter more than precision
Sid Meier's Pirates!
Sword duel timing and ship-handling minigames
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands
Bandits and skags are scripted
Sid Meier's Pirates!
AI captains follow simple fixed behaviours
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands
Procedural loot drops gate your power
Sid Meier's Pirates!
Treasure locations, wind, and town states roll randomly
Sid Meier's Pirates! leans a little harder on optimization, though the gap is small.
Borderlands
Builds, gear math, and farming routes dominate
Sid Meier's Pirates!
Trade routes, faction standing, and career planning 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.