head to head
vs
Child of LightvsPortal 2
Child of Light leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Child of LightPortal 2
Axis by axis
Execution2 vs 3
Portal 2 leans harder on execution: Portal placement requires some precision but timing is lenient.
Reads0 vs 0
Even - both lean on reads about the same.
Variance2 vs 0
Child of Light leans harder on variance: Minor drop randomness
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.