head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Practiced Mastery
An open-world pirate adventure where upgrading the Jackdaw matters more than the blade.

Optimization · Practiced Mastery
Aging Ezio chases Altair's legacy through Constantinople in the trilogy's closer.
Assassin's Creed IV: Black Flag leans Optimization (Practiced Mastery); Assassin's Creed Revelations 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.
Assassin's Creed IV: Black Flag
Naval broadsides and boarding need modest timing
Assassin's Creed Revelations
Hookblade traversal and forgiving counters
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed IV: Black Flag
Multiplayer deception mode; campaign is scripted
Assassin's Creed Revelations
Multiplayer hide-and-hunt kept human bluffing
Assassin's Creed IV: Black Flag leans a little harder on variance, though the gap is small.
Assassin's Creed IV: Black Flag
Weather, convoys, and hunting spawns
Assassin's Creed Revelations
Fixed missions
Assassin's Creed IV: Black Flag leans a little harder on optimization, though the gap is small.
Assassin's Creed IV: Black Flag
Ship upgrades and fleet economy drive progress
Assassin's Creed Revelations
Den defense and city investment systems
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.