head to head
vs
Portal: Still AlivevsTrine
Portal: Still Alive leans Optimization (Pure Optimization); Trine leans Optimization (Pure Optimization).
Portal: Still AliveTrine
Axis by axis
Execution3 vs 4
Trine leans harder on execution: Physics platforming and wizard-box stacking need dexterity
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization8 vs 7
Portal: Still Alive leans harder on optimization: Seeing the portal solution and routing chambers 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.