head to head
vs
Lemmings 3DvsPortal 2
Lemmings 3D leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Lemmings 3DPortal 2
Axis by axis
Execution3 vs 3
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 0
Lemmings 3D leans harder on variance: Levels are fixed puzzles with nothing hidden
Optimization8 vs 9
Portal 2 leans harder on optimization: Solving the puzzle's logic IS the entire game.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.