head to head
Assassin's Creed IIvsChronology
Assassin's Creed II leans Optimization (Practiced Mastery); Chronology leans Optimization (Practiced Mastery).
Assassin's Creed IIChronology
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 0
Assassin's Creed II leans harder on variance: Fixed world and missions
Optimization5 vs 6
Chronology leans harder on optimization: Time-manipulation puzzles each have one solvable answer
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

