head to head
Riven: The Sequel to MystvsThe Longest Journey
Riven: The Sequel to Myst leans Optimization (Pure Optimization); The Longest Journey leans Optimization (Pure Optimization).
Riven: The Sequel to MystThe Longest Journey
Axis by axis
Execution0 vs 1
The Longest Journey leans harder on execution: Pure point-and-click with no time pressure
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 1
The Longest Journey leans harder on variance: Linear world states with essentially no hidden randomness
Optimization9 vs 8
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.

