head to head
vs
Assassin's Creed IIvsAssassin's Creed IV: Black Flag
Assassin's Creed II leans Optimization (Practiced Mastery); Assassin's Creed IV: Black Flag leans Optimization (Practiced Mastery).
Assassin's Creed IIAssassin's Creed IV: Black Flag
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads0 vs 2
Assassin's Creed IV: Black Flag leans harder on reads: Multiplayer deception mode; campaign is scripted
Variance1 vs 2
Assassin's Creed IV: Black Flag leans harder on variance: Weather, convoys, and hunting spawns
Optimization5 vs 6
Assassin's Creed IV: Black Flag leans harder on optimization: Ship upgrades and fleet economy drive progress
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.