head to head
vs
Riven: The Sequel to MystvsSyberia
Riven: The Sequel to Myst leans Optimization (Pure Optimization); Syberia leans Optimization (Pure Optimization).
Riven: The Sequel to MystSyberia
Axis by axis
Execution0 vs 1
Syberia leans harder on execution: Walking and clicking; zero reflex demand
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 1
Syberia leans harder on variance: Linear journey with virtually no hidden-information surprises
Optimization9 vs 7
Riven: The Sequel to Myst leans harder on optimization: pure logic-puzzle solving, walkthrough-solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.