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
An open-world pirate adventure where upgrading the Jackdaw matters more than the blade.

Optimization · Pure Optimization
A hybrid real-time and tactical action RPG in a digital city.
Assassin's Creed IV: Black Flag leans Optimization (Practiced Mastery); Transistor leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed IV: Black Flag
Naval broadsides and boarding need modest timing
Transistor
Real-time and planned hybrid combat.
Assassin's Creed IV: Black Flag leans a little harder on reads, though the gap is small.
Assassin's Creed IV: Black Flag
Multiplayer deception mode; campaign is scripted
Transistor
Process enemies follow scripts.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed IV: Black Flag
Weather, convoys, and hunting spawns
Transistor
Limited randomness.
Transistor leans a little harder on optimization, though the gap is small.
Assassin's Creed IV: Black Flag
Ship upgrades and fleet economy drive progress
Transistor
Function loadouts have deep 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.